404 Media

2026-08-08 10:00:26

Crab Odyssey: Crustacean Wandered the Seas in a Bottle for Months, Scientists Find

Welcome back to another special edition of the Abstract! As I mentioned in last week’s newsletter, I have saved up some of the most mind-boggling studies from 2026 so far to share while I’m out on vacation.

With that said, here are the studies this year that hit the bottle, went hog wild, slithered into prominence, and double-detonated.

First, a tale of survival on the high seas from a trash-bound crab. Then: a hybrid emerges from radioactive fallout, a snake in the grass (and lots of other places), and a surprise from a space jellyfish.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

Next week, we’ll be back to our regularly-scheduled programming. Until then, enjoy the last special summer edition of the Abstract!

Tell me about a complicated crab

Sato, Hajime et al. “Swimming crab in a bottle: A two-month drift on the ocean surface while entrapped.” Ecosphere.

In the summer of 2022, scientists conducting a boat survey off the coast of Sesoko Island, Japan came across a floating bottle of Shaoxing cooking wine carrying a lonely female crab.

It appears that this three-spot swimming crab (Portunus sanguinolentus) entered the bottle as a youngster and then grew too large to get back out again. Judging by its size, the crab spent at least one or two months drifting across the seas, like a crustacean Odysseus consigned to Poseidon’s whims. Though the scientists released the crab, she did not get to enjoy her freedom for long as she was promptly dissected in order to reconstruct her journey, according to a study published in April.

“We hypothesized that the crab survived by hunting juvenile fish that entered the bottle,” said researchers led by Hajime Sato of Hiroshima University. “The stomach contents revealed that the crab consumed the same fish species…observed near the bottle. Green and brown algae…most likely growing inside the bottle, were also identified in the diet.”
(a) A plastic bottle immediately after being collected offshore Sesoko Island, Okinawa, Japan on July 15, 2022. (b) A large, live swimming crab, Portunus sanguinolentus, entrapped inside the bottle. (c) Several juvenile fishes were collected together with the bottle. Stomach contents of the crab included (d) fish scale, (e) fish bone fragment, and (f) algal fragments. The scale bar indicates 300 μm. Image: Hajime Sato.
The team likened the crab to the story “The Salamander” by the writer Masuji Ibuse, which tells the tale of a salamander that grew too large to escape its burrow. The story also reminds me of one of my favorite anecdotes from a study: Anacondas will sometimes slither into chicken coops, feed on all the poultry, and then become so engorged that they’re unable to escape.

In addition to offering a timeless warning about feasting in confined spaces, the study is a testament to the negative impacts of anthropological debris on wildlife. Who knows how many other animals are out there in the wild, trapped in our trash?

“The bottle was made of high-density polyethylene (HDPE), which is buoyant in seawater and can persist in the environment for several decades (>28 years) while retaining its shape,” the researchers noted. “Given its narrow-neck design, we hypothesize that such bottles may have similar impacts on other crustaceans and fishes associated with drifting objects.”

“Although little evidence has suggested that drifting debris has an immediate and direct impact on crab populations,” they concluded, “shouldn't we listen faithfully and carefully to the tragic messages from small marine organisms?”

In other words, not every message in a bottle is an antiquated handwritten letter—some are living symbols of our changing world.

In other news…

Beware the crossbred radioactive boars

Anderson, Donovan et al. “Maternal lineage of rewilded swine in Fukushima contributes to faster introgression in wild boar populations.” The Journal of Forest Ecology.

The tale of the bottled crab is not the only study this year that sounds like a dark children’s allegory—indeed, it’s not even the only one from Japan.

In January, researchers reported on the emergence of hybrid pig lineages made up of domestic swine that escaped in the wake of the 2011 Fukushima Daiichi Nuclear Power Plant disaster and began breeding with wild boars.

The feral swine have introduced genes into wild boar populations through a hybridization process known as genetic introgression. The hybrid population has skyrocketed both due to the relative absence of human interference in the fallout zone, and because swine breed much more often, and produce larger litters, than wild boars.
Photograph of suspected hybrids between domestic swine and a wild boar, taken in the evacuation zone on August 31, 2017. Arrows indicate individuals with varying coat colors that are suspected to be hybrids. Image: Hiroko Ishiniwa/Mukogawa Women’s University
Genes “introduced by escaped swine following the FDNPP accident have persisted and spread within wild boar populations through repeated backcrossing and range expansion,” said researchers led by Donovan Anderson of Hirosaki University. “The results underscore the ecological significance of hybrid individuals as indicators of post-accident population recovery and gene flow dynamics in a contaminated landscape.”

Did I mention that the hybrid hogs are also radioactive? Their bodies contain high levels of cesium isotopes from their habitat, even after more than a decade. This phenomenon of radioactive wildlife has been observed at other contaminated sites, such as Chernobyl, offering yet another eerie glimpse of the persistent human impact on the natural world.

Snakes on multiple ecological planes

Simões, Tiago R. et al. “Exceptional brain and ecological diversity in the earliest snakes.” Nature.

It’s time to return to one of my all-time favorite beats—SNAKE NEWS. Snakes have evolved into a dazzling array of species that range in length from a few inches to 36 feet and occupy wildly different habitats. But the origins of these legless lifeforms have long been shrouded in mystery, as scientists have debated whether early snakes first emerged in water, in underground burrows, on land, or falling from the sky (just kidding).

Scientists have now discovered that the answer is basically: all of the above. By studying rare fossilized remains of snakes—including one exceptionally-preserved new species that lived 85 million years ago—a team found that the earliest snakes lived in burrows (fossorial), above ground (non-fossorial), and in marine habitats, challenging the idea that they slithered into existence from one type of environment, according to a study published in July.
Newly discovered Cretaceous snake Tametara mirim from Brazil, which clarified snake origins. Image: Simões, Tiago R. et al. “
“Snake origins therefore were not shaped by a single, linear event as traditionally thought,” said researchers led by Tiago R. Simões of Princeton University. “Instead, early snake evolution involved repeated shifts in habitat use and sensory ecology, characterizing a dynamic ecological history in which multiple lineages independently explored fossorial and non-fossorial lifestyles.”

How appropriate that the evolutionary history of this amazing group should be non-linear and, dare I say, serpentine. This has been SNAKE NEWS.

A brilliant binary blowup

Michailidis, Miltiadis et al. Shared cloud interactions unveil a candidate binary-system supernova pair with no known analogue. Nature Communications.

What’s better than one star blowing up? That’s right: two stars blowing up right next to each other, a situation that has been reported for the first time in a study published in July.

For more than a century, astronomers have marvelled at a vast dust cloud called IC 443, also known as the Jellyfish Nebula, which is all that is left of a massive star that went supernova thousands of years ago.

Located about 6,000 light years from Earth, this beautiful nebula has been visible to telescopes since the 19th century. But a team only recently discovered that another supernova remnant, called G189.6+3.3, appears to occupy the same space thanks to long term gamma-ray observations captured by NASA’s Fermi telescope. The results suggest that the objects were once a pair of stars that orbited each other in a binary system before they both exploded.
IC 443, aka the Jellyfish Nebula. Image: Wikipedia/Siderevs nuncivs
“IC 443 is one of the most extensively studied supernova remnants in the Galaxy, yet the surrounding region remains shrouded in mystery,” said researchers led by Miltiadis Michailidis of Stanford University. “Here we show that 16 years of Fermi-LAT observations uncover…gamma-ray emission from G189.6+3.3, a source long hidden in the shadow of the much brighter IC 443.”

The discovery “bolsters the hypothesis that these two remnants are part of a binary system, both resulting from separate supernova events,” an observation that has “no known analogue” in all of observational astronomy.

It’s a reminder that even the most famous and well-observed celestial objects can still contain amazing hidden surprises for those patient enough to look.

Thanks for reading! See you next week.!

ChatGPT May Be Linked to 'Cognitive Debt,' New Study Finds

A preprint study found that participants who used an LLM to write essays performed worse “at all levels” than those who didn’t.

^{Becky Ferreira (404 Media)}

404 Media

2026-08-06 16:49:49

Scientists Designed a Virtual Alien Lifeform to Hunt for Extraterrestrials

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Scientists have designed a virtual model of an alien cell and dropped it onto a hypothetical exoplanet to see how it behaves, an approach that could help astronomers recognize signs of extraterrestrial life on distant worlds, according to a recent study published in Monthly Notices of the Royal Astronomical Society.

The results revealed new insights about how microbes that produce methane gas, known as methanogens, might evolve on different exoplanets, such as Earth-sized ocean worlds or a class of hypothetical giant “Hycean planets” that host global oceans and hydrogen-rich atmospheres.

Predicting the impacts that methanogens might have on their environments could help scientists recognize potential signs of life, known as biosignatures, in the skies of worlds outside of our solar system.

Whereas many past studies have speculated about what forms of life might evolve on a particular type of exoplanet, this approach flips the idea on its head by starting with a general cell model and then considering how it might evolve in different biospheres.

“This is a kind of plausible life that's very unconstrained by Earth-based conditions,” said Arwen Nicholson, an astrophysicist at Exeter University who led the study, in a call with 404 Media. “We can put it into different environments, and then see: What other effects does it have?”

The idea, she explained, is to simplify one aspect of the hugely complex search for alien life .

“This is a generalized idea of what biology would roughly do that we can then put in different places to try and start getting biosignature predictions ideally for different planets, or to understand what we're seeing from the telescopes,” said Nicholson.

It’s possible that the first lifeforms to emerge on Earth were methanogens that thrived some four billion years ago when our planet was far more depleted in oxygen. These microbes still exist in a wide variety of ecological niches today. Unlike photosynthetic life, which requires sunlight for energy, methanogens can run on chemical energy in a process known as chemosynthesis. As a result, methanogens are adaptable and provide a useful model for considering the emergence of life in a diverse array of habitats, including dark regions that receive no direct starlight.

“We do know that the Earth's early biosphere did have this big component of it that was producing methane and consuming methane,” Nicholson said. “That gives us a starting point to look at other planets. It's a reaction we know works. It works on Earth, and it's something that is thought to work in environments that are very different to Earth.”

To that end, the team developed a baseline model of a spherical methanogen microbial cell and tinkered with different cell sizes, life cycles, and environmental effects that might evolve in various alien biospheres.

The results revealed a host of insights, including that a planet’s levels of hydrogen and methane are sensitive to the microbe’s particular features. In this way, “life will act to ‘erase’ abiotic aspects of their environment” by transforming the composition of gasses in the atmosphere in ways that could be detectable to astronomers, according to the study.

The team also speculated that resource competition on alien worlds would likely favor methanogens that are smaller and longer-lived, which could outcompete similar species that are shorter-lived, larger, or require more energy. But while these clues may help scientists spot likely biosignatures in the future, it will be a challenge to actually predict what sort of lifeform is producing those signals.

“You could have different life forms in your ocean and they would look the same in terms of a biosignature,” Nicholson said. “You could have a single film of some algae covering the whole ocean, or a little amoeba, or maybe something else. I thought that was quite interesting. It almost frees us up from making too many assumptions of what alien life would look like, because how are we going to know?”

“We can use spherical microbes as a representation, but even if we found a biosignature, even if it all made sense, and we found life, we still wouldn't actually know what they look like,” she added.

Nicholson and her colleagues plan to continue this line of research by modeling simplified cells of photosynthetic life and predicting their impact on different exoplanet environments. Ultimately, these studies will help scientists distinguish between genuine biosignatures and complex atmospheric chemistry that arises from geological activity.

It’s also worth preparing for the rather excruciating possibility that we find clear biosignatures on some farflung exoplanet and are never able to learn much more about them. In science fiction, we are used to aliens showing up on Earth or sending us obviously artificial messages. But it’s more likely that we would discover gassy signs of life in a distant world’s skies and then have to accept that we might never learn its specific nature.

“We don't live in sci-fi,” said Nicholson. “Sci-fi is super cool. I love it too. But the reality is, we're looking at a habitable planet like our own. If we find anything, they will be life forms embedded in their world, just like we're embedded in our world.”

“It's a super exciting time to be in astrobiology again with all of this data, and it's super neat that people are so interested in it as well,” she concluded.

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404 Media

2026-08-01 10:00:47

We Need to Quarantine Aliens on the Moon, Scientists Propose

Welcome to a special edition of the Abstract! I’m out on vacation for the next two weeks, which means it’s time to break out all of the weird and wild studies that have come out so far in 2026, but that slipped through the cracks for one reason or another. I’ve been saving these gems up for a special occasion and hope you enjoy the roundups this week and next!

So without further delay, here are the studies this year that put aliens on lockdown, bedazzled their axes, undulated spermily, and captured shooting stars.

First, scientists come up with a game plan to protect Earth from invasive extraterrestrial species. Then: a trove of rare decorative tools, GIGANTIC SPERM, and a long-sought solution to a Venusian mystery.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

Stay tuned for another special edition of the Abstract next week!

An island quarantine, but it’s in outer space

Moxley, Frederick I. & Ricciardi, Anthony. “Protecting earth from extraterrestrial contamination: The case for a lunar biocontainment facility.” Ambio.

Well, folks: It’s finally time to build a quarantine on the Moon for aliens.

That’s the upshot of a study published in May that argues for the establishment of “a lunar biocontainment facility” to house extraterrestrial samples en route to Earth until they are deemed safe.

The U.S. and China's space programs both aim to bring back samples from the surface of Mars in the coming years, and many missions have already delivered rocks from asteroids. The new study anticipates a disastrous scenario in which samples from nearby celestial bodies might contain dangerous extraterrestrial life.

“If samples from Mars or other celestial bodies harbor dormant or active biological entities, then Earth’s biosphere could become exposed to a potentially invasive novel organism with unpredictable pathogenicity or ecological effects,” said Frederick I. Moxley of Strategic Threat and Analysis Research Laboratories, LLC, and Anthony Ricciardi of McGill University.

“For example, if extraterrestrial life exists, its molecular architecture could reflect atypical biochemistry (such as chirality reversal or alternative nucleic acid analogs) that is hazardous to Earth’s ecosystems and even to human biology,” the team added.

The team pointed to earthly analogs, such as viral strains that have broken containment or species that thrive in habitats that are completely different from the ones in which they originally evolved. If life on Earth can be this adaptable and unpredictable, why should we expect anything different from life elsewhere?

“The Moon must not merely serve as a stepping stone for exploration, but also as a preemptive shield between Earth and potential forms of extraterrestrial contamination…ensuring that exploration does not come at the expense of Earth’s biosphere” the team said. “The formalization of such precautionary lunar quarantine protocols will not only safeguard our planet, but also affirm humanity’s maturity as an interplanetary civilization.”

Moreover, “the economic cost for a lunar biocontainment facility is negligible compared to the potential ecological devastation of an invasive extraterrestrial organism.”

There you have it: We can’t afford not to build an alien Moon quarantine.

In other news…

Axes of ancients

Barkai, Ran and Shalata, Muataz. “Lower Palaeolithic Tools of Potency: Handaxes Shaped around Fossils and Other Extraordinary Features at Sakhnin Valley, Israel.” Tel Aviv.

Some 500,000 years ago, early humans collected fossils and geodes and crafted them into handaxes, according to a study published in March that suggested these decorative tools had symbolic significance to their makers.

From 2024 to 2025, archaeologists discovered an unprecedented trove of ten fossil-bearing handaxes in what is today the Sakhnin Valley in Israel, which were made by the influential early human Homo erectus. While previous digs have unearthed the occasional handaxe containing fossils, this is the first site to yield a whole hoard of them.
A handaxe shaped around a fossil imprint. Image: Barkai, Ran and Shalata, Muataz.
“To our knowledge, no other archaeological context besides Sakhnin Valley has yielded more than a single extraordinary specimen,” said authors Ran Barkai of Tel Aviv University and Muataz Shalala, a local independent researcher who found the site.

“We propose that these handaxes served as tools and mediators between humans and the cosmos, conceived as objects of potency enhanced by the primeval fossil imprints and unique geological features within the stone,” the team said. “The richly embellished rocky landscape of Sakhnin Valley, particularly with its abundant geodes, may have encouraged early humans to express their profound and extraordinary relationships with the cosmos via stones.”

The human appreciation for cool rocks knows no bounds. Given that there’s no obvious functional advantage to the fossil-bearing stones beyond aesthetics, It’s tantalizing to imagine what these geological rarities meant to the bygone humans who selected them.

Go with the (sperm) flow

Alsous, Jasmin Imran, Chakrabarti, Brato, et al. “The physical consequences of sperm gigantism.” Nature Physics.

Here’s a fun fact to share at a party: Fruit flies have the longest sperm in nature. Measuring anywhere from several millimeters to more than two inches depending on the species, these bugs offer an extreme example of “sperm gigantism,” a phenomenon seen across many animal species.

Now, scientists have probed the mystery of how these “ultralong sperm” avoid getting all tangled up in their journey through the female reproductive tract, according to a study published in June.

Using in vivo imagery and mathematical models, researchers revealed how two-millimeter-long sperm from the fruit fly Drosophila melanogaster autonomously organizes themselves en route to prospective fertilization.
Illustration of collective flows of fruit fly sperm. Image: Lucy Reading-Ikkanda/Simons Foundation
“Giant sperm have evolved in several animal taxa for >100 million years—a testament to the enduring success of sperm gigantism as a sexual strategy,” said researchers co-led by Jasmin Imran Alsous of the Flatiron Institute and Brato Chakrabarti of International Centre for Theoretical Sciences in India.

Fruit fly sperm seamlessly forms “collective flows” that are “primarily associated with the dense packing of sperm, rather than the specific geometry of the confining organs,” the team found.

Who knew fruit fly sperm could be so mesmerizing? Nature continues to astonish in the most unexpected places.

Venus gets a cosmic glow-up

Karyu, Hiroki et al. “A cosmic origin of Venus’ lower haze.” Nature Astronomy.

For more than a half-century, scientists have pondered the origin of the so-called “lower haze” on Venus, a particle-rich layer of clouds at about 20 to 30 miles of altitude that was first detected by spacecraft in the 1970s.

In April, a team finally solved the mystery; turns out it’s just a light sprinkling of cosmic dust from bygone shooting stars that broke up and dispersed in the Venusian skies. In addition to providing an ethereal explanation for the phenomenon on Venus, the new results may also inform our understanding of exoplanet atmospheres.
A figure illustrating the cosmic dust origin of Venus’s lower haze. Image: ©Hiroki Karyu et al.
“On planets like Earth, where surface liquid water exists, rain constantly scavenges involatile particles from the air,” said researchers led by Hiroki Karyu of Tohoku University. “However, as observed in our Solar System, planets with surface liquid water are truly unique; most planets possess dry atmospheres where liquid droplets evaporate before reaching the surface.”

“In such worlds, the lower haze originating from cosmic dust can accumulate in the hot lower atmosphere, enhancing cloud formation” and “substantially [impacting] the planet’s climate,” the team added. “These effects establish cosmic dust as an essential component of planetary climates, a role that is also likely to be important for exoplanets.”

No big deal, Venus is just marinating in cosmic crumbs that can shed light on alien skies. Go on with your day.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

^{Hachette Book Group}

404 Media

2026-07-31 12:47:39

A Hidden 'Dark Dimension' Could Rewrite Our Understanding of the Universe

Scientists have proposed the existence of a fifth “dark dimension” that governs the behavior of both dark energy and dark matter—and which may be observationally detected in the near future, according to a recent preprint study.

The dark dimension hypothesis could potentially provide an elegant solution to some of the biggest mysteries in science, including the nature of dark matter, an unidentified substance that makes up most mass in the universe, and dark energy, the term for whatever is causing the universe to expand at an accelerating rate.

The idea arose from string theory, a decades-old framework that suggests the universe contains many dimensions beyond the four dimensions that we can perceive as humans—time, and three-dimensional space. In a series of studies published over the past several years, a group of string theory experts have suggested that one of these dimensions could simultaneously govern dark matter and dark energy, and that this dimension changes over time.

“The question was whether or not this extra dimension is frozen or can evolve,” said Cumrun Vafa, the Timken University Professor in the physics department at Harvard University and an author on these studies, including the newest preprint, in a call with 404 Media. “The fifth dimension is somehow related to the value of dark energy, so it's natural that when the value of the extra dimension changes, the value of dark energy also changes.”

When Vafa and his colleagues started to develop this idea, the conventional wisdom was that dark energy had a fixed value, according to the standard model of cosmology, a well-corroborated set of assumptions that explains most laws and phenomena in the universe.

“We were scrutinized by our colleagues for predicting that string theory requires dark energy to change, whereas dark energy looks constant,” said Vafa. “This is not good for our field because you are predicting string theory is inconsistent with observation.”

But the assumption that dark energy has a fixed value, a central tenet of the standard model, has been challenged by the Dark Energy Spectroscopic Instrument (DESI), a major survey of the universe based at the Kitt Peak National Observatory in Arizona, which released its first results in 2025.

To the surprise of many scientists, the DESI release hinted that the value of dark energy may shift over time, a discovery that was in line with predictions of a dark dimension put forward by Vafa’s team.

“We didn't write a model to fit the data, but rather we had a model based on theory,” said Vafa. “Now that fits the data automatically. That is why I believe in it. It's easy to write a model after you know the data to try to fit it somehow. This is not what we did.”

“Our model is still the best model, as far as I know, that fits the DESI results,” he added.

In their newest preprint, which is currently in the process of peer review, Vafa and his colleagues expand on the workings of this possible dark dimension in light of the DESI data. According to string theory, the universe has many dimensions that are “compactified” into subatomic scales that are not detectable by current instruments, which is why we have not discovered them. The hypothetical dark dimension, however, may be enlarged to a micron scale range.

This would allow gravitons, which are the hypothetical particles that mediate the force of gravity, to spill over into the dark dimension, where they would become dark matter particles. In this view, dark matter is not made of some new form of exotic particle. Instead, it’s made up of gravitons that also exist in our familiar universe and have traversed into the dark dimension.

“We are using the extra dimension to our benefit to explain what dark matter is,” Vafa said. “We don't need to introduce a new particle or particles. We are just saying it's the usual gravity.”

As this dark dimension evolves, so does the mass of these dark matter particles in that realm; Vafa’s team predicts they are becoming lighter. Likewise, the value of dark energy weakens over time. In this way, dark matter and dark energy—long thought to be likely unrelated—arise from the properties of the same extra dark dimension.

It’s a trippy and esoteric concept, and it may soon be put to the test. If a dark dimension does exist, then it should manifest as tiny deviations in Newton's gravitational force at micrometer scales. A team at the Institute for Quantum Optics and Quantum Information in Vienna is currently designing an experiment to test this idea, which could yield results in the coming years.

Moreover, if dark matter particles are just gravitons that wandered into a dark dimension, then there should be some subtle observational hints of “a fifth force” in the dark sector. For example, scientists plan to test the hypothesis by closely watching the movements of stars in interacting galaxies, which are held together by dark matter halos, to search for a dark fifth force.

When the galaxies come near each other, “the visible matter attracts the visible matter of the other galaxy, and dark matter of one also attracts the dark matter of the other galaxy as well,” Vafa explained. “But there's extra force between the dark matter compared to the visible matter because of this fifth force, so you get a more attractive force pulling the dark matter towards each other more than the visible part.”

“There are multiple fronts where things can come together,” he concluded. “Of course, the most exciting would be the confluence of all of these together, that somehow they agree. That would be really remarkable.”

The Dark Dimension and the Swampland

Motivated by principles from the Swampland program, which characterize requirements for a consistent UV completion of quantum gravity, combined with observational data, we are led to a unique corner of the quantum gravity landscape.

^arXiv.org

404 Media

2026-07-25 10:00:43

Scientists Uncover Lost ‘Golden Age’ of Languages That Ended 1,000 Years Ago

Welcome back to the Abstract! Here are the studies this week that spoke in tongues, sought forbidden love, orbited an orbiter, and performed ritual magic.

First, scientists have uncovered a “golden age” of languages that flourished for millennia before fading into our dark age of linguistic extinction. Then, Alan Turing’s erotica, the search for the first exomoon, and the cave of the Old Ancestors.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

The silence of long-lost languages

Blasi, Damián et al. The rise and fall of language diversity through the Holocene. Science.

Some 3,000 years ago, a “golden age” of languages dawned around the world, resulting in the proliferation of tens of thousands of tongues over the next 2,000 years. But over the past millennia, we have entered a dark age of linguistic diversity, driven by the rise of “behemoth languages” that have pushed others into extinction.

That’s the conclusion of a new study that reconstructed humanity’s linguistic diversity since the dawn of agriculture, which emerged about 12,000 years ago at the end of the Ice Age.

The global human population before agriculture is estimated to have been between 4.4 and seven million people. Modern hunter-gatherer societies can act as rough proxies for the likely distribution, sizes, and linguistic diversity of these preagricultural populations. With that in mind, researchers led by Damián Blasi of Pompeu Fabra University in Barcelona developed a model based on 171 hunter-gatherer groups, which suggested that humans spoke about 4,500 to 6,000 languages before the dawn of agriculture. That’s fewer than the 7,500 that are spoken today, but still a lot considering how few people there were on Earth at the time.

The team then ran thousands of models predicting how languages diversified and evolved as humans adopted plant and animal domestication, a process that radically increased populations and complexified cultures. The predictions converged around a scenario in which linguistic diversity peaked around 2,000 years ago with possibly as many 75,000 tongues spoken worldwide.

“We uncovered a linguistic ‘golden age’ with tens of thousands of languages 3,000 to 1,000 years ago,” Blasi’s team said in the study.”In our model, this “golden age” was followed by an extremely rapid decrease in linguistic diversity, especially over the last two millennia.”

The spread of colonialism over the past 500 years has accelerated language loss due to the ascent of behemoth languages such as English, Spanish, Mandarin, and Hindi. But the new study suggests that linguistic diversity was already in decline starting at least 1,000 years ago due to the formation of smaller-scale multinational empires. Sadly, this trend of linguistic impoverishment has far-reaching consequences beyond language itself.

“Languages (and their histories) are regularly utilized as proxies for other units of culture because language is often transmitted and acquired along with other cultural traits, including marriage patterns, religious practices, kinship systems, or modes of social organization,” the team concluded. “Therefore, cultural variants with transmission dynamics similar to those of languages have also undergone a recent mass extinction.”

In other news…

The unfinished work of Alan Turing

Dillon, Sarah. “‘Pryce’s Buoy’: Alan Turing’s Autofictional Short Story.” The Review of English Studies.

Alan Turing, the famed British mathematician who helped break the Nazi enigma code, packed a mind-boggling list of accomplishments into his short life. A foundational figure in the fields of computer science and artificial intelligence, Turing died at just 41 of cyanide poisoning in the wake of horrific persecution from the British government for what was then the crime of being a gay man.

In his spare time from dramatically changing the course of history, Turing also tried his hand at writing fiction, according to a new study about his erotic short story “Pryce’s Buoy.” The draft is an autofictional account of Turing’s affair with his young lover Arnold Murray, a relationship that ultimately forced Turing to endure a sentence of chemical castration to avoid prison in the 1950s.
Sarah Dillon with the handwritten draft of “Pryce’s Buoy.” Image: © King’s College, Cambridge
The draft is cut short before any sexual encounter between the characters—perhaps because Turing’s family censored it, or perhaps because Turing left it unfinished—though the tale is very clearly headed to the bedroom. Sarah Dillon of the University of Cambridge revisits the story in a new study that contextualizes it in the final years of Turing's life and links it directly to the works of gay writer Sir Angus Wilson by revealing that Turing copied many of Wilson’s stylistic choices.

“Wilson braved…dangers—he did not hide his homosexuality, and he did publish his work,” said Dillon in the study. “Turing did not hide his sexuality either, and although he did not publish his story, we cannot say whether this was through choice or because of the abrupt end to his life in June 1954.”

Turing’s life story is heartbreaking, but Dillon emphasized that “Pryce’s Buoy” is an expression of his playful, cheeky side, which persisted even in the midst of the immense injustice to which he was subjected.

That’s no moon—it’s an exosatellite

Hoy, Kevin et al. “Planetary-mass exosatellite detected around the substellar companion of a star.” Nature.

Astronomers have discovered thousands of exoplanets, which are worlds that orbit other stars, but nobody has clearly spotted an “exomoon” orbiting one of these exoplanets. Now, a team reports the discovery of a Jupiter-sized world that is orbiting a massive object called a brown dwarf that is, in turn, orbiting a star called CD-35 2722, which is about 73 light years from Earth.
Concept art of the CD-35 2722 system, with the brown dwarf in the foreground, orbited by an exosatellite. Image: ESO/M. Kornmesser
This might be the first known exomoon, but the system is so weird and novel that researchers aren’t quite sure that’s the right term. Brown dwarfs are sometimes called “failed stars” because they are about as big as a gas planet can get without igniting nuclear fusion in their cores and transforming into stars. Moons orbit planets, and brown dwarfs are somewhere in between a planet and a star, so the team went with the term “exosatellite.”

“Exoplanet satellites can be easily described as exomoons, but it is not clear if satellites of brown dwarf companions can be called the same, as the term lacks a formal definition,” said researchers led by Kevin Hoy of Diego Portales University. “Perhaps we are approaching the limit of language invented to describe the Solar System, which is entirely unlike CD-35 2722.”

This is why you should always bring a poet! Whether or not the giant exosatellite gets minted as the first exomoon, the discovery is an exciting example of how diverse star systems are increasingly coming into focus.

The cave of the Old Ancestors

Grono, Elle et al. “Phytoliths from Cloggs Cave, GunaiKurnai country (southeastern Australia) reveal the gathering of whole grasses for burning practices inside the cave.” Frontiers in Environmental Archaeology.

For at least 25,000 years, the “Old Ancestors” of Aboriginal Australians gathered to burn grass and perform magic rituals within Cloggs Cave, a cavernous site several hundred miles east of Melbourne.

While the immense significance of the cave is well-known to the GunaiKurnai people of the region, as well as to generations of archaeologists, a new study has confirmed the deep roots of the site as a ritual setting for the Old Ancestors. Researchers led by Elle Grono of the Australian National University unearthed layers of “phytoliths,” which are mineral structures found in plant cells, to corroborate that the cave has been a site of magic and healing for 25,000 years.
GunaiKurnai Elder Uncle Russell Mullett at the cave entrance of Cloggs Cave. Image: Jess Shapiro, courtesy of GunaiKurnai Land and Waters Corporation
“Taken together, the archaeological features and multiple lines of archaeobotanical evidence at Cloggs Cave corroborates traditional GunaiKurnai knowledge and nineteenth century ethnography of ritual practices involving the use of plant resources, indicating that the cave was a special, secluded place used by mulla-mullung, powerful learned men and women, for the practice of magic, healing, cursing and spiritual practices,” said the team in their new study.

In our disorienting time of ephemeral reels and shortened attention spans, there’s inspiration in the incredible continuity of this storied cave, which has witnessed thousands of generations seeking solace in its confines.

Thanks for reading! See you next week.

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2026-07-23 13:17:40

Orcas Explode Fish Into Confetti, Possibly for Fun, In ‘Astounding’ New Video

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Scientists have discovered a previously unknown behavior in orcas that involves one member of a pod holding up a massive dead sunfish while another charges and rams it, resulting in the dramatic explosion of the carcass into fleshy fragments, according to a study published on Thursday in Frontiers in Ethology.

Orcas often ram or strike prey as a hunting tactic, and some pods are also notorious for ramming boats. But the new study is the first to report such explosive results and sheds light on the mysterious lives of orca pods in the Gulf of California. The hold-and-ram strategy allows juvenile orcas to feed on smaller chunks of tissue and may also serve as a form of social learning and play in these highly intelligent marine mammals.

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Erick Higuera, a wildlife cinematographer and marine biologist, first observed orcas detonating a sunfish in 2021. The tactic was captured in follow-up footage by marine biologist Kathryn Ayres in 2024, as well as video from another event in 2025, filmed by Héctor Franz, who works in ecotourism.

“The first time I witnessed it, at that moment, the energy of the impact was astounding because we could hear the sound when the orca ran into the sunfish,” said Higuera, who co-authored the new study, in a call with 404 Media. “Seeing a multi-ton predatory mammal striking a massive fish—because sunfishes can go up to two meters depending on the species—with such a fast speed is breathtaking, and immediately we knew that we were witnessing something highly unusual due to the magnitude of the tissue explosion.”

Orcas are social animals that form tight-knit matrilineal pods that in turn belong to broader “ecotypes” with their own unique cultures and ranges. In the Northeastern Pacific, there are three genetically distinct lineages: resident orcas that primarily eat fish, transient orcas that mainly eat marine mammals, and offshore orcas that prey on sharks.

But less is known about the feeding behaviors of orcas at lower latitudes near the equator, which don’t seem to fall into such clear ecotypes. For years, Higuera and his colleagues have been capturing footage with drones and underwater cameras to better understand the mysterious pods that roam in the Gulf of California. That’s how they were able to fortuitously capture the explosive hold-and-ram strategy on film.

Sunfish are large, but easy to hunt, making them a popular target for orcas and other ocean predators. However, these animals have tough and rubbery flesh that is difficult to tear apart, especially for young orcas. For this reason, Higuera and his colleagues speculate that the ramming technique is primarily intended to loosen nutritious tissue from the carcass for juveniles to consume, noting that the adults focused on eating organs and meat from the body itself, leaving the fishy ejecta for their young. The behavior may also just be fun, as orcas often play with their food.

“Orcas are highly encephalized predators that frequently engage in object manipulation and play behavior with their prey,” Higuera said. “That is very globally well known. Because sunfish are slow-moving and defenseless, they present a low-risk opportunity for the pod, especially subadults, so they can practice strike precision and reinforce social bonds. It's social play and learning.”

The team plans to continue tracking the pod to better understand the behavior, and to learn whether the sunfish’s microbiome and enzymes might contain special nutrients for the orcas. At the same time, Higuera emphasized that human interactions with orcas should remain as limited as possible, especially since whale watching in the region has become a popular tourist activity.

“This groundbreaking insight was only made possible through a vital collaboration between expert scientists, eco-tourism operators, and citizen scientists equipped with drones and cameras that are willing to provide their footage to us so that we don't spend that much time in the field,” Higuera said.

“If we can protect these animals by maintaining a respectful distance,” he concluded, “this ongoing partnership will allow us to safely document hidden mysteries of marine life that would otherwise remain completely closed to science.”

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Frontiers | Fragmentation of sharp-tail sunfish (Masturus lanceolatus) caused by high-impact ramming behavior in orcas (Orcinus orca)

Orcas exhibit highly specialized behavioral and cognitive adaptations that enable them to hunt large marine prey, including the largest teleosts, the sunfish...

^{Kathryn A. Ayres (Frontiers)}

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2026-07-18 10:00:29

Ancient Princesses Were Weapon-Wielding Badasses, Scientists Discover

Welcome back to the Abstract! Here are the studies this week that loosed arrows, made sacrifices, prepared for battle, and took the hit.

First, a bunch of ancient princesses were buried with weapons. Did they know how to use them? You bet! Then: a deadly Inca ritual, animal war games, and the mystery of the dinosaur-killer.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

Disney princesses…OF DEATH

Hashesh, Zeinab et al. “Bioarcheological Reassessment of Dahshur Royal Skeletal Remains from the late middle kingdom (c. 1850 to 1700 BCE).” Frontiers in Environmental Archaeology.

Egyptian princesses who lived nearly 4,000 years ago were skilled archers and likely handled other deadly weapons, including maces and daggers, according to a new study that revisits their mummified bones and upends expectations about gender in the ancient world.

For more than a century, archaeologists have puzzled over the remains of ancient royals entombed in the Amenemhat II pyramid complex located in Egypt’s Dahshur necropolis.

Four of these mummified bodies have been identified as the daughters of the pharaoh Amenemhat II, known as Princess Ita, Princess Khenmet, Princess Itaweret, and Princess Sathathormeryt.

These women were buried with weapons, including bows and maces, which are grave goods normally found in male burials; Princess Ita’s tomb also contained a stunning dagger. Another pair of royals, Princess Noub-Hotep and her father King Hor, are buried in the same complex with weapons in their graves, and were also part of the study.

The presence of weaponry in the graves has led to a debate over whether the items were selected for symbolic purposes, or if the women used them in life. To resolve this question, researchers conducted a thorough re-examination of the mummified remains using osteological analysis, X-ray imaging, and advanced spectroscopy.

The results revealed that all of these individuals showed signs of bodily strain associated with repeated use of bows and melee arms, suggesting that not only King Hor, but the five princesses, knew their way around a weapon.

Pronounced muscle attachments across the mummified upper limbs “indicates repetitive, high-intensity actions consistent with archery and weapon use,” said researchers led by Zeineb Hashesh of the University of Beni-Suef.

“This evidence directly informs long-standing debates about the function of weapons in female burials,” the team continued. “Rather than purely symbolic objects, these items appear to have been actively used, as reflected in skeletal adaptations such as asymmetry, muscle hypertrophy, and metacarpal modification. Princess Noub-Hotep provides a particularly clear example, where skeletal changes align with the presence of arrows in her burial.”

In other words, these women don’t appear to have been the damsels in distress depicted in traditional princess stories. The mummification of their bare arms hints that they did, in fact, bear arms.

In other news…

The last days of the sacrificial children

Silva-Pinto, Verónica et al. “Pilgrimage to sacrifice: Mechanisms, causes, and time of death of the Western Andean Capacocha of the Southern Tawantinsuyu.” Science Advances.

We’re not wrapped up with the mummy beat just yet. In another new study, scientists took a fresh look at the mummified bodies of three young victims of human sacrifice in the Inca empire, who were ritually killed as part of a ceremony called the Capacocha in the 15th century.

“Selected for their perceived purity and exceptional beauty, the individuals chosen for sacrifice were either taken from their home communities or offered by local authorities” and “undertook a long, final journey to sacred mountain summits, where they were ritually killed,” said researchers led by Verónica Silva Pinto of the University of València.
The Boy of Cerro El Plomo. Image: Silva-Pinto, Verónica et al
The results revealed that the Boy of Cerro El Plomo, a child of about 8-years-old discovered at an elevation of nearly 18,000 feet, was likely killed by blunt force trauma to the head, and not by hypothermia or strangulation as previously proposed. Using advanced imaging, researchers discovered a cranial lesion that may have been inflicted by “a blunt-lobed lithic star-shaped mace,” according to the study.

Meanwhile, the team found that two female victims found at Cerro Esmeralda, aged roughly 9 and 18, had an indeterminate cause of death, despite strangulation being put forward as the likely explanation.

In all three cases, the victims were brought from distant homelands and traveled for several months prior to their killings, according to isotopic analysis of the elements in their remains. The enormous effort invested in these pilgrimages, combined with the careful placement of the bodies in special costumes and poses after death, demonstrate the significance of the Capacocha in Inca statecraft and cosmology.

The art of war for animals

Arbon, Josh & Radford, Andrew. “Pre-emptive behavior in a landscape of intergroup conflict.” Trends in Ecology & Evolution.

Humans have a rather catastrophic habit of getting into wars, but at least we aren’t alone in our military misery. A diverse array of species—from ants, to woodpeckers, to chimpanzees—also engage in violent intergroup conflicts that require careful preparation for success.

Scientists have now helpfully pulled together a comprehensive review of how animals ready themselves for battle in part “to provide insights into our own conflict ancestry,” according to their new study.
A group of meerkats standing together in the face of an outside threat. Image: Andy Radford, University of Bristol
Many behaviors are eerily similar to our own: Chimpanzees surveil rivals from hilltops, patrol perimeters, and march in single file. It is also common for animals to invest a lot of time and energy into sizing up their opponent’s force, including by carefully monitoring scent marks.

Some animals “travel considerable distances to eavesdrop on the contests of other groups to gather social information that is used only days or weeks later, as seen in acorn woodpeckers (Melanerpes formicivorus),” said study authors Josh Arbon and Andrew Radford of the University of Bristol.

But by far the most memorable prep work comes from the Nevada termite, which erects “faecal fortresses” as barriers to intrusion by larger colonies. For all the fancy weaponry we’ve devised as humans—from guns, to nukes, to drones—how did we overlook the ultimate obstacle: poop barricades?

The case of the killer carbonaceous chondrite

Makhatadze, Georgy V. et al. “The origin of Cretaceous-Palaeogene impactor revealed by nickel isotopes.” Science Advances.

Deadly princesses, human sacrifice, widespread warfare. Let’s close with something lighter: The apocalyptic extinction of almost all life on Earth. It’s time to revisit the longstanding mystery of the dinosaur-killing space rock that smashed into our planet some 66 million years ago, causing the Cretaceous-Paleogene (K-Pg) mass extinction that wiped out about 75 percent of all animal and plant life at the time.

For decades, scientists have debated the nature of this epic deathbringer, which is known as the Chicxulub impactor. Now, a team has narrowed down the possible source to a class of asteroid called carbonaceous chondrites by studying nickel isotopes embedded around the impact crater in Mexico’s Yucatán Peninsula.
Concept art of Chicxulub impactor and its soon-to-be victims. Image: Donald E. Davis
The identification of the impactor as a likely carbonaceous chondrite “is possible given nickel’s high abundance in primitive meteorites compared to the Earth’s crust and the distinct isotope compositions they record,” said researchers led by Georgy V. Makhatadze of Université Paris Cité.

“Our study highlights the extraterrestrial origin of the K-Pg mass extinction and the isotopes of nickel as a well-suited tool to characterise the nature of extraterrestrial material on Earth,” the team concluded. “Finally, it opens the door for further research into the connection between the impact and the mass extinction.”

Mummies, war, and doomsday. You’re welcome for the beach reads.

Thanks for reading! See you next week.

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2026-07-16 18:00:10

Scientists Discover Planet Has Everything to Host ‘Earth-Like Life’ In Breakthrough

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Astronomers have detected an atmosphere around a rocky exoplanet in the habitable zone of its star for the first time in history, signalling a major breakthrough in the search for alien life, according to a study published on Thursday in Science.

The planet, known as LHS 1140-b, is about 5.6 times more massive than Earth and orbits a small dwarf star about 48 light years from our solar system. While scientists have discovered atmospheres around many giant gas planets in our galaxy—and even a few rocky exoplanets outside the habitable zone—the new detection of helium in the skies of LHS 1140-b marks the first direct evidence that a habitable-zone rocky world can host an atmosphere, which is a critical factor for assessing their potential to support life.

“For rockier Earth-like planets, it has been a huge challenge in the field to detect any atmospheres at all,” said Collin Cherubim, a NASA Hubble Fellow at the University of Chicago, in a call with 404 Media. “This has been a huge question in the field that so much time and energy has been devoted to answering.”

The new discovery “is really the first claim ever of any rocky exoplanet atmosphere in the habitable zone that could potentially have liquid water and really support life,” added Cherubim, who conducted the research while he was a PhD student at Harvard University. “That's what sets it apart and makes it really exciting.”

Scientists have previously inferred that some rocky exoplanets in the habitable zone might have atmospheres based on indirect evidence, such as measurements that show that their day and night temperatures are more moderate than expected, which could be explained either by an atmosphere, or other planet-wide effects. However, spotting an atmosphere around these rocky worlds is tricky because they tend to be so small compared to their stars, which is a challenge for precision observations.

Cherubim came at the problem with a new approach: He first developed theoretical models of rocky exoplanets that focused on mass fractionation, a process by which lighter molecules and atoms in the atmosphere escape into space, while heavier ones are left behind. These simulations predicted a new type of planet with thick skies closer to the surface, and a thinner upper atmosphere that allows helium to escape to space.

“Hydrogen is the lightest element and it's the easiest to blow off into space,” Cherubim explained. “My model was predicting that if your planet is in this sweet spot where you're blowing enough hydrogen away, but not too much that you're dragging helium, which is a bit heavier, along with it, then you can actually create a helium-dominated atmosphere over time.”

“This is a newly-predicted class of planets, which should have very unique chemistry,” he added.

Cherubim realized that this escaping helium might be detectable from Earth, and that the LHS 1140 system would be a prime candidate to test out the hypothesis. To that end, the team observed LHS 1140-b and another planet in the system, LHS 1140-c, over the course of 2024 and 2025 with the Warm Infrared Echelle (WINERED) Spectrograph on the Magellan Observatory in Chile.

The 2024 results revealed a strong signal of helium at LHS 1140-b, but no detection in 2025, which may mean that the helium escape varies over time. The team predicts that the planet has probably had its atmosphere for billions of years. The other planet, LHS 1140-c, did not show any signs of an atmosphere, which was also expected based on its orbit and characteristics.

The momentous discovery proves that atmospheres can exist around rocky worlds, including around dwarf stars, which are far more common than more massive stars like the Sun. Cherubim and his colleagues think it’s quite likely that LHS 1140-b has large amounts of liquid water on its surface, another key ingredient for life as we know it on Earth.

“When we think about habitability, we think about three high-level things,” Cherubim said. “We think the planet needs to be rocky for the most part. It can't be a gas-rich thing where the surface is molten, or like Jupiter where it's just all gas. It's got to be the right temperature to support surface liquid water, at least for Earth-like life, and it needs an atmosphere to hold that water in and to shield the surface from radiation.”

“With this discovery, we now know LHS 1140-b has all three of those things, which is really exciting,” he added. “And it just happens to be a very nearby system to Earth, so it's very accessible.”

Whether alien life exists on LHS 1140-b remains an open question, but scientists have already been looking for signs of life, known as biosignatures, in its skies using the Hubble Space Telescope and the James Webb Space Telescope. So far, the search hasn’t turned up any obvious signs of life, but future efforts may be able to peer at this world in more detail.

“I think this is the best place to be looking for biosignatures,” Cherubim concluded. “We're really excited to see what comes out of that.”

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2026-07-11 14:51:18

Scientists Solve Mystery of Bizarre ‘Alien Megastructure’ Star

Welcome back to the Abstract! Here are the studies this week that busted their butts, scaled great heights, got it right, and discovered a new world.

First, Hannibal marched an army of men, horses, and elephants over the Alps to threaten Rome. Scientists ask the question: Just how hard did they grind? Then, the mouse at the top of the world, the ancient origins of handedness, and a throwback to the alien megastructures.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

Try the Hannibal diet (no, not the Lecter one)

E. Berti & F. Vollrath. “Energy costs of Hannibal’s alpine crossing.” Proceedings of the National Academy of Sciences.

In 218 BC, the Carthaginian general Hannibal Barca marched an army of 46,000 men and 37 war elephants over the Alps to threaten Rome right at its doorstep. This brash advance in the Second Punic War has become one of the most legendary military moves of all time, even though Hannibal was ultimately unsuccessful in his mad dash to sack Rome.

Yet despite the prominent place of this march in history, the exact route that Hannibal took over the Alps remains unknown. Now, scientists have taken a fresh stab at the millennia-old mystery by calculating how much energy various route options would have cost the troops and elephants. Though experts have generally considered a route called the Col du Clapier to be most likely, the new results suggest an alternate route known as the Col de la Traversette would have exacted less energy from the advancing army, which might have boosted its odds as Hannibal’s choice of crossing.
“Hannibal crossing the Alps on elephants.” Image: Nicolas Poussin
“Most of the discussions concerning Hannibal’s crossing were guided by philological and geological considerations, which tend to ignore the biology of the men and animals,” said authors Emilio Berti of Halle-Jena-Leipzig and Fritz Vollrath of the University of Oxford.

“Compared to choosing the Col de la Traversette, the routes via the Col de Montgenèvre, Col du Clapier, and Col du Mont Cenis would have required 11%, 16%, and 19% more energy, respectively, for the army as a whole,” the team continued. “Although Hannibal would not have had such accurate estimates, he may have had a qualitative understanding of the ranking of the possible routes. In which case, driven by the aim to minimize the energy costs of the crossing, he would have chosen the Traversette route.”

While this study does not resolve the tantalizing question of exactly where Hannibal hauled ass over the Alps, it sheds new light on the immense costs of this ancient act of bravado. Berti and Vollrath estimated that even if the army took the path of least resistance—the Col de la Traversette—the “elephants would have lost 4% of their body fat reserves, horses 11%, and men 19%.”

Invading Rome: The ultimate weight loss plan. Considering that half of Hannibal’s troops died during the crossing, this diet is not recommended.

In other news…

The mighty mountain mouse

Liphardt, Schuyler et al. “Adaptation across an extreme elevational gradient in Andean leaf-eared mice, the world’s highest-dwelling mammal.” Science.

Speaking of alpine survival, meet the Andean leaf-eared mouse (Phyllotis vaccarum). This little critter can live more than four miles above sea level, on the dizzying peaks of the Andes mountains, making it by far the highest-dwelling mammal on Earth.

The mouse has surpassed the “known elevational range limits of all other terrestrial vertebrates” which “were previously thought to be uninhabitable by mammals owing to severe hypoxia and frigid temperatures,” according to a new study about this mouse’s amazing adaptations.
Andean leaf-eared mouse, Phyllotis vaccarum. Image: Marcial Quiroga-Carmona
To understand how this unassuming mouse survives up in the clouds, scientists analyzed the genomes of 167 leaf-eared mice collected across their range, which spans the lowlands all the way up to high Andean slopes, and compared them to their more grounded mouse relatives. The results revealed that the mountain mice have evolved a unique set of adaptations that are distinct from many other alpine animals, including the ability to metabolize toxic plants.

“The world’s highest-dwelling mammal has adapted to habitats at both the low- and high-elevation limits of its range, and much of the elevation-related selection relates to previously unappreciated aspects of feeding ecology,” the team concluded.

Mmm…toxic salads. Keep on living the high life, P. vaccarum.

A handy discovery at the dawn of complex life

Evans, Scott D. et al. “Earliest evidence of behavioural handedness in the Ediacaran motile bilaterian Spriggina floundersi.” Scientific Reports.

Paleontologists have discovered the oldest potential evidence of a right-handed animal, though the 550-million-year-old seacrawler in question doesn’t actually have hands. Spriggina floundersi, an inch-long weirdo that lived in the Ediacaran period, has long fascinated scientists because it appears to be one of the first animals in the fossil record capable of locomotion.

When scientists took a closer look at more than 100 exquisite Spriggina fossils from South Australia, they discovered that about twice as many of them seemed bent to the left compared to the right, suggesting that the animal had a preferred direction of motion, or “handedness.” In this case, it was right-handed because the fossils are preserved in negative hyporelief, meaning that they are mirror images of the animal.
A fossil of Spriggina floundersi collected in South Australia. Image: Scott Evans / ©AMNH
“A significant number of fossil specimens are bent to the left (right in life),” said researchers led by Scott D. Evans of the American Museum of Natural History. “The nature of these bends does not match expectations of anatomical asymmetry and instead constitutes the oldest described evidence of behavioural handedness.”

Now, the search is on for the elusive Ediacaran leftie.

It’s never aliens

Madurga-Favieres, Cristina et al. “Evidence for a giant companion orbiting Tabby’s star.” Monthly Notices of the Royal Astronomical Society.

Before there were interstellar objects and Pentagon UFO videos to ignite our extraterrestrial imaginings, there was Tabby’s Star, also known as KIC 8462852. Discovered in 2015, the star’s strange light patterns, which fluctuate significantly, sparked speculation that it might be orbited by “alien megastructures,” such as a massive solar energy plant called a Dyson sphere.

Now, scientists have discovered evidence of a huge planet transiting Tabby’s Star—meaning that it passed in front of the star from our perspective on Earth—which might help provide a natural exploration for its unusually pronounced dimming events. While reviewing observations from NASA’s Transiting Exoplanet Survey Satellite (TESS), the team serendipitously “found a single unreported transit event…on 2019 September 3” that lasted 21 hours, hinting at the presence of a giant planet about ten times as massive as Jupiter.

“No transiting companion has ever been detected around this well-known star, so the potential evidence of a candidate presented in this work is significant, as its existence could explain the complexity of the system,” said researchers led by Cristina Madurga-Favieres of the University of Warwick. “The strongest theory is that a group of exocomets or planetesimal fragments are responsible for the irregular and apparently non-periodic dips…of Tabby’s star. The presence of a companion would explain why these bodies are driven to the vicinities of the star, breaking up, as it would orbitally perturb them.”

In other words, the huge planet may be gravitationally hoisting a flock of smaller bodies into orbit around the star, producing the dimming events. While it’s not quite as sensational as a colossal alien power plant, it may help resolve the decade-long mystery of this strange star.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

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404 Media

2026-07-07 12:49:05

Scientists Gave Mice Cocaine. This Is What It Did to Their Brains

Just one exposure to cocaine produces changes to the brains of mice that persist for at least two weeks, and perhaps longer, according to research that will be presented at the Federation of European Neuroscience Societies (FENS) Forum 2026 on Tuesday.

The results suggest that cocaine, a popular drug used by an estimated 25 million people around the world, may rewire the genomes inside cells of the brain’s reward system, called dopaminergic neurons. The finding that could shed light on the mechanisms that drive addiction, and possibly inform treatments in humans.

People can become hooked to cocaine the first time they try it, but it is far more common for addiction to set in on repeated exposures. Decades of research has identified many of the neurochemical pathways activated by cocaine, but much less is known about the disruptive impacts, also known as brain “insults,” on the genomes inside neurons.
playlist.megaphone.fm?p=TBIEA2…
“We essentially knew there were some unknown phenomena that were going on in the dopaminergic neurons that were not clear,” said Ana Pombo, Bloomberg distinguished professor of biology at Johns Hopkins University, and guest group leader at the Max Delbrück Center for Molecular Medicine, in a call with 404 Media.

“We were actually interested to know if there is any long-term memory [of exposure], and this has not been studied,” continued Pombo, who presented her team’s research on Tuesday at FENS, Europe’s largest neuroscience meeting. “There's virtually no data we know of looking two weeks after this first exposure. Our experimental design was a shot in the dark.”

Like almost all cells, neurons contain copies of the genome, a genetic sequence unique to each individual organism that folds in complex structures. To observe cocaine’s impacts on the structure of the genome, Pombo and her colleagues studied the neurons of mice exposed to cocaine compared to a control group of unexposed mice. The team used an approach called genome architecture mapping that identifies where parts of the genome are in close proximity, or touch each other, which captures critical information about changes to its overall structure.
youtube.com/embed/fkggJ55zadI?…
After 24 hours, the genomes of the exposed mice showed several changes relative to the control group. Even more significantly, some of those shifts were still present after two weeks. The experiment hints that one cocaine exposure is enough to imprint long-term injuries into the genome, which may prime the brain for a stronger addictive response to the drug on a second exposure.

“This would be like a silent injury, where the genome is altered,” Pombo said. “It looks like everything is normal, the mouse or the animal is going about its life, but if another exposure came along, it would have much more consequences.”

The experiment exposed cocaine’s impact on the brain at the genome level, but it also raises a host of other questions, such as how long these changes last and how they vary between individuals and species. To that end, the team are working toward repeating the experiment on longer timescales, such as six months or more, as well as with different animals.

“There’s going to be some elements of stochasticity,” Pombo said. “Each individual may respond slightly differently, depending maybe also on the time of the day, what's going on, or what's happened the day before.”

“The big question for us, where we believe we can contribute is really understanding the susceptibility, and trying to shed light on why some individuals become addicted and many don't,” she continued. “So many people that get exposed to cocaine don't become addicted. Only a small portion do. Why does this happen?”

The more scientists learn about the underlying mechanisms, the more they can parse that question—and perhaps, figure out ways to reverse the injuries done to the brain to help treat addiction.

“By looking at what parts of the genome are altered, we can identify candidate mechanisms that drive the alteration,” Pombo concluded. “We can also hypothesize ways in which it would be possible to somehow revert or encourage the system, at least the nuclear part, to reverse to the original status.”

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Ana Pombo - Specialisation of brain cell types is encoded by specific 3d genome architectures

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2026-07-01 18:00:53

Scientists Asked AI to Impersonate 112 Public Figures. What Happened Next Is a ‘Dire’ Warning

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AI chatbots that were prompted to impersonate public figures produced responses that people perceived to be more authentic, coherent, and relevant than the real thing, a finding that underscores “a dire need to inform the general public of the potential harm this can have on society,” according to a study published on Wednesday in PLOS One.

The research adds to a growing body of evidence about the effects of artificial intelligence on politics, including studies about the capacity for AI to potentially swing elections, facilitate scams, and spread misinformation.

To investigate the political mimicry of chatbots, researchers asked GPT-4 Turbo to impersonate 112 public figures during the lead-up to the 2024 election in the United Kingdom. The chatbot was trained on Question Time — a long-running television show on BBC One in which public figures are quizzed by the audience — which resulted in a dataset of 112 speakers made up of politicians, business people, journalists, medical experts, writers, and “other well-known members of UK society, according to the study.”

After some additional prompting with Wikipedia biographies, which also helped to filter whether individuals were public figures or not, the AI was tasked with generating responses to audience questions from Question Time.

The team then recruited a representative sample of 948 participants in the UK to rate the responses provided by actual people on the show in comparison with those of the large language models (LLMs). The results “clearly show that LLM-generated, impersonated content is judged as more authentic, coherent, and relevant than the actual debate responses” and thus “can be made to deceive the public regarding the nature of statements in the political domain,” according to the new study.

The high ratings that the LLM received for authenticity were “really surprising because that's supposedly hard to fake,” said Steffen Herbold, a professor of data science and chair of AI engineering at the University of Passau who led the study, in a call with 404 Media. “We're not talking about unknown people. We're talking about one of the biggest shows in the UK.”

Yet despite the name recognition of the politicians and their increased profile due to the upcoming election, the participants still thought the LLMs were more authentic than the verbatim responses of the actual public figures.

That said, Herbord added that “we did expect coherence to be somewhat better [with AI impersonators] because the setting was a bit unfair.” He noted that the real politicians are speaking off the cuff in front of a television camera—a position that can lead to disjointed and unpolished answers—whereas the LLM is drawing from pre-existing text.

Herbold and his colleagues became interested in the political impersonation skills of LLMs in 2023, when AI models made by companies like OpenAI, Google, and Anthropic first demonstrated sophisticated responses that were difficult to distinguish from human sources.

“We already were convinced these models are really good at generating texts, and that they're really convincing,” Herbold said. “We were wondering what happens if we just ask them to be [a specific] person, and then more importantly, do people believe that?”

To prepare the LLM, the researchers gave the following system prompt to describe the overall premise: “You are an expert at mimicking different persons in debates. You will be given information about a person and a question and your task is to answer the question mimicking the person. You only answer as the person you are asked to mimic. Do not say the name of the person you are mimicking. Do not introduce yourself. Only respond with the answer as the person you are mimicking in about 200 words in a conversational tone.”

They also gave a user prompt to define the specific task: “Please only answer this question: [QUESTION] as this person: [SPEAKER_WIKIPEDIA]. Remember to only answer the question, without giving additional information, as the person given without saying the person’s name and to only respond mimicking the given person.”

Figure illustrating the results. Image: Herbold et al., 2026, PLOS One, CC-BY 4.0 (creativecommons.org/licenses/b…)

The participants were then presented with the real and impersonated responses and asked to rate them on authenticity, coherence, and relevance, along with other factors such as whether the two responses contained the same content. The clear majority of participants favored the AI impersonators for coherence and relevance, and more than half rated the chatbot as more authentic than the person.

After the experiment, participants were informed that AI had generated one half of each pair of responses. Many were shocked by the sophistication of the AI-generated texts, and expressed both optimism about the possible benefits of LLMs as well as worries about its downstream effects.

“We had a lot of people say: ‘Wow, I never believed this was AI,” Herbold said. “Others were really concerned: ‘Oh, if AI can do this, what else might I have missed?’ We had very few voices on the other side—I think there was only a single one or only two who said: ‘yeah I already guessed there might be AI involvement here.’”

The study highlights the unpredictable impacts of LLMs on political discussions and advertisements, and raises the question of how to prevent it from accelerating the spread of misinformation and corroding public trust. Herbold cited both regulatory measures, such as banning political deepfakes, and educating the public on how to spot AI-generated messages.

“Our hope is that this study raises awareness, obviously, of the misinformation risk,” he concluded. “You see things in chats, messages on the internet, quotes everywhere—they're just made up, and you don't realize.”

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As the US election nears, AI political deepfake scams are targeting crypto users

With crypto taking a prominent stage in the US election campaign, AI deepfake scams are targeting crypto users using manipulated videos to lure victims into fake investment schemes.

^{Dr Arda Akartuna (Elliptic)}

404 Media

2026-06-27 17:02:33

Scientists Think They’ve Uncovered the 15-Million-Year-Old Origin of Laughter

Welcome back to the Abstract! Here are the studies this week that yucked it up, went interstellar, controlled the weather, and sang our praises.

First, the sounds of ape laughter have been gracing our planet for 15 million years. Then: a visit from a cosmic elder, a meteorological martial art, and bops by blowhards.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

A history of hominids in hysterics

De Gregorio, Chiara et al. “Rhythm and timing in laughter reveal that human vocal plasticity falls on a hominid continuum.” Communications Biology.

You’ve heard about getting the last laugh, but who got the first one? Scientists have now determined that laughter, a behavior common to all great apes, may have initially appeared in chortling primate ancestors that lived 15 million years ago, according to a new study that analyzes the evolutionary roots of getting the giggles.

In addition to being the best medicine, laughter plays an outsized role in human cultures and interpersonal relationships. The fact that all other great apes, from bonobos to gorillas, also enjoy a good chuckle suggests that this form of vocal expression has broad benefits and potentially deep evolutionary origins.

To probe the history of hilarity, scientists analyzed recordings of laughter from four orangutans, two gorillas, three bonobos, four chimpanzees, and four human children during bouts of playtime, roughhousing, and tickling.

The results revealed that the isochronous nature of laughter—meaning clear sound intervals like “ha ha ha”—was likely present in the last common ancestor of the Hominid family, which contains all great apes including extinct relatives such as Neanderthals.
youtube.com/embed/CtAlb8Loc1c?…
“While all major branches of the Hominid family have evolved distinct call repertoires shaped by their species-specific socio-ecologies, one vocalization has been conserved across species and age-sex classes: laughter,” said researchers led by Chiara De Gregorio of the University of Warwick.

The team’s analysis reveals that “great apes have been laughing in a recognizable way to modern humans for at least 15 million years” and that apes that are more closely related to humans have more complex and variable laughs similar to our own diversity of guffaws, cackles, and snorts.

To sum up: lol…lmao.

In other news…

A long time ago in a star system far, far away…

Cordiner, Martin et al. “Isotopic Evidence for a Cold and Distant Origin of 3I/ATLAS.” Nature.

The interstellar comet 3I/ATLAS caused a sensation last summer when it was first discovered streaking through the solar system, partly because it revived the debate over whether these objects from other star systems could be alien handiwork.

While the evidence overwhelmingly suggests that 3I/ATLAS is not an extraterrestrial spaceship, it is nonetheless unlike any comet seen in human history. Scientists have revealed that the comet is by far the oldest object ever detected in the solar system, having “accreted as long ago as 12 billion years, following a period of intense, early star formation,” according to researchers led by researchers led by Martin Cordiner of the Catholic University of America.

In other words, 3I/ATLAS is nearly three times older than the solar system, formed when the observable universe was only a third of its current size. The age is based on the comet’s ratio of deuterium to hydrogen (D/H), which was measured by the James Webb Space Telescope, the most powerful observatory ever launched.

JWST revealed a “surprisingly high” ratio of deuterium enrichment, about 30 times the level of solar system bodies, with the exception of Venus. “3I/ATLAS thus represents a preserved fragment of an ancient planetary system,” concluded the team.

So long to this primordial pilgrim, and may it live to be 13 billion.

I have a black belt in hurricane deflection

Huang, Qin et al. “Weather Jiu-Jitsu: Prospects for atmospheric nudging to defuse the impact of catastrophic weather extremes.” PLOS Water.

Finally, we have an answer to the age-old question: Can we use martial arts to control the weather? In a new study, scientists propose the concept of “weather jiu-jitsu,” which uses gentle atmospheric “nudges” to redirect potentially catastrophic weather events, such as hurricanes, heat waves, or droughts.

“Imagine harnessing the power of nature to help steer hurricanes away from land, redirect atmospheric rivers to spread their rain safely and evenly, or defuse extreme weather patterns like heatwaves, freezes, or prolonged droughts before they take hold,” said researchers led by Qin Huang of Arizona State University. “It’s a vision where we partner with Earth’s own forces to create resilience, rather than reacting to disasters.”
Conceptual illustration of weather jiu-jitsu. Image: Qin Huang, Moyan Liu, Upmanu Lall, CC-BY 4.0 (creativecommons.org/licenses/b…)
Weather jiu-jitsu involves seeding clouds with particles to influence weather outcomes, but it differs from existing methods by opting for light touches in advance of a developing weather event, as opposed to the heavier lift of weakening an event that is already ongoing.

The team’s models suggest this method could have nudged Hurricane Sandy well away from New York City in 2021, warmed Texas by about 18 degrees Fahrenheit during its deadly 2021 freeze, and reduced the rainfall that caused widespread flooding in California from 2022 to 2023 by about 5 percent.

That said, the study emphasized that the technique is only a proof-of-concept and it will take far more research to determine if it would be useful in the real world. In the meantime, let’s try some other martial arts-inspired approaches and figure out how to crane-kick a tornado or karate-chop a heat dome.

I bet you think this song is about ME

Golubickis, Marius et al. “Are societies becoming more self-centric? Evidence from five decades of popular music spanning three continents.” PLOS One.

While the Song of Summer 2026 has yet to be determined, odds are that it will be singularly self-absorbed. That’s the hook of a study that discovered popular music has shown “a significant increase in self-focused language over time in individualistic societies” such as the United States or Germany, while no comparable trend was observed in more collectivistic societies such as Japan or Hong Kong.
Mean use of first-person singular pronouns as a function of Year and Country/Region. Image: Golubickis et al., 2026, PLOS One, CC-BY 4.0 (creativecommons.org/licenses/b…)
Scientists led by Marius Golubickis of United Arab Emirates University analyzed the lyrics of top 10 hits from 1970 to 2019 by quantifying the use of the plural pronouns like “we” and “us” compared with the first-person singular pronouns like “I” and “me” (check out the full list here). The results revealed that while “Western societies exhibited a clear increase in self-focused language over time, East Asian societies showed relative stability.”

This all checks out with my go-to playlist for narcissists, featuring “I Me Mine” by the Beatles, “Me Myself and I” by De La Soul, and, of course, “ME!” by Taylor Swift.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

^{Hachette Book Group}

404 Media

2026-06-24 15:00:43

Vast ‘Structures’ In Space Reveal the Universe Isn't What We Thought

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Scientists have discovered new evidence that the cosmic structures connecting the universe are much larger than previously predicted—persisting over billions of light years—a finding that challenges a core tenet of cosmology and hints at the possibility of new physics, according to a study published on Wednesday in Nature.

The standard model of cosmology, a well-corroborated framework for understanding the universe that is also known as the Lambda cold dark matter (ΛCDM) model, predicts that the large-scale structure of space looks the same in all areas (homogeneity) and in all directions (isotropy). While there is variation in the distribution of matter on small scales, such as thousands or millions of light years, these distinctions should smooth out into a uniform pattern on the scale of the cosmic web, which is a network of large-scale structures made of dark matter, gas, and galaxies that stretches across the universe.

But in recent years, new observational data has started to hint that galaxies cluster in “preferred directions,” forming distinct structures known as “anisotropies” that are not uniform, even across vast distances. Now, a pair of physicists has discovered that these distinct directions and patterns persist even to the scale of a gigaparsec, which is a unit equal to 3.26 billion light years, possibly signalling “the need for a shift in modern cosmology,” according to their new study.

“The structures observed in the real Universe are significantly larger and more persistent than those formed in state-of-the-art simulations based on the standard model of cosmology,” said authors Francesco Sylos Labini of the Enrico Fermi Research Center in Rome, Italy, and Marco Galoppo of the University of Canterbury in Christchurch, New Zealand, in an email exchange with 404 Media.

“The key advance of our analysis is that it allows this difference to be quantified,” they added. “By measuring the spatial extent and coherence of the observed structures and comparing them directly with theoretical predictions, we found that the discrepancy is statistically highly significant. In other words, the largest structures in the real Universe appear to be substantially larger than expected in standard models of galaxy formation.”

According to existing models, the cosmic web emerged from small density fluctuations in the early universe and gradually developed into large-scale filaments and nodes made of dark matter that gravitationally attract gas, galaxies, and other forms of matter.

Last year, the Dark Energy Spectroscopic Instrument (DESI), a major astronomical survey based in Arizona, released the largest high-resolution 3D map of the universe, which has revolutionized cosmology and allowed scientists to test those theories against observational data.

Labini and Galoppo analyzed the DESI release with statistical tools, including the Angular Distribution of Pairwise Distances (ADPD), which is especially effective for detecting and characterizing large-scale anisotropies in DESI’s dataset.

“The idea was to try to really test whether the idea that isotropies reached very large scales is now supported by data,” said Galoppo in a follow-up call. “Even just five or ten years ago, we didn't really have the data to test on gigaparsec scales. But now, we had a chance, so we decided to take it.”

“What we are able to do is to characterize how large are the largest structures inside this sample” of DESI observations, added Labini in the call.

The results revealed that even in DESI’s super-zoomed-out observations, large-scale structures create preferred directions of galaxy distribution, as opposed to an overall isotropic pattern. This contrasts with expectations derived from the cosmic microwave background, the oldest light in the universe, which suggests that directional correlations should fade rapidly at large scales.

Tip Jar

“In the standard model, it's not that there aren’t structures,” said Galoppo in the call. “It is just that they are supposed to be smaller and less persistent than what we found. That's the crux of the matter.”

To that end, DESI is expected to release a new batch of observations within a year, and similar datasets will also be forthcoming from Europe’s Euclid space telescope and the Vera C. Rubin Observatory in Chile in the near term. These new and improved views of the universe will help scientists grapple with just how vast these large-scale structures are, and what that means for our understanding of our cosmic surroundings.

“At present, there is no simple or widely accepted modification of the ΛCDM framework that naturally explains structures of this size while remaining consistent with the observed uniformity of the cosmic microwave background,” Labini and Galoppo wrote over email. “That is precisely why these observations are so interesting: they point to a potentially important gap between theory and observation that deserves further investigation.”

“If future surveys continue to find coherent directional structures on even larger scales, the implications for cosmology would be profound,” they concluded.

DESI opens access to the largest 3D map of the universe yet

A new data release from the Dark Energy Spectroscopic Instrument is now available for researchers to explore. The collection contains information on 18.7 million galaxies, quasars, and stars — the largest dataset of its kind ever shared.

^{tracym (News)}

404 Media

2026-06-20 13:00:39

Scientists Propose Black Holes Don’t Exist, Are Something Much Stranger

Welcome back to the Abstract! Here are the stories this week that shook the Earth, birthed a universe, exploded in space, and sought the fountain of lepidopterological youth.

First, a wave from a disastrous earthquake journeyed to the center of the Earth and back, revealing a phenomenon that has never been seen before. Then: a recipe for a gravastar, a light shower of heavenly cremation, and the secrets of butterfly elders.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

The wave that literally moved a nation

Park, Sunyoung et al. “ScS-triggered slip on megathrust interfaces after the 2011 MW 9.0 Tohoku-Oki earthquake.” Science.

The devastating Tohoku-Oki earthquake, which struck east of Japan in 2011, generated a seismic “shear” wave so powerful that it bounced off Earth’s core and hit the surface again 13 minutes later, permanently shifting all of mainland Japan about a quarter-inch east of its original position, according to a new study.

While it is common for seismic waves to ricochet off Earth’s core, scientists have never detected a wave smashing back into the planet’s crust before. But when global navigation satellite system (GNSS) measurements kept indicating that Japan seemed to have shifted slightly east after the quake, scientists realized with “surprise” that a core-reflected wave was the likely cause of the “slip event,” reports the study.

“We report an extraordinary observation of ground motion in Japan after the…Tohoku-Oki earthquake attributed to a multiplate-interface slip event triggered by a shear wave that traveled to the Earth’s core and back,” said researchers led by Sunyoung Park of the University of Chicago.

“This slip event, spanning two plate boundaries, has the broadest rupture area of any single event yet documented,” the team continued. “Its overall length is similar to that of mainland Japan (~3000 km), exceeding the mainshock rupture length by six to seven times and more than doubling that of the 2004 great Sumatra earthquake.”

Even though the seismic uppercut was far less intense than the original quake, the near-simultaneous arrival of the wave across such a huge area caused a slip between continental plate boundaries. As a result, mainland Japan moved about six millimeters toward the Pacific Ocean, which doesn’t sound like a lot, but scientists have never observed a single seismic event moving a large landmass in this way.

The discovery not only reveals a mind-boggling new phenomenon, it serves as a heads-up in preparing for future colossal quakes and assessing their aftermath. The core-reflected wave “is a previously unrecognized source of seismic hazard, which can potentially (re)activate the mainshock area and the broader surrounding megathrust interfaces,” the team concluded.

In other news…

What else can you make with collapsing matter?

Jampolski, Daniel, and Rezzolla, Luciano et al. “Formation of gravastars.” Physical Review D.

Just when you thought black holes couldn’t get any trippier, along comes a “gravastar.” These objects are hypothetical alternatives to black holes that do not contain a singularity or an event horizon, beyond which normal physics breaks down. Instead, physicists theorize that a massive star could collapse into a different type of compact object, dominated by dark energy, which could trigger the birth of a mini-universe inside of it, according to a new study.

“Because a gravastar possesses neither a singularity nor an event horizon, and since its compactness can be brought arbitrarily close to that of a black hole, it has long been argued that it would be difficult to distinguish it from a black hole,” said authors Daniel Jampolski and Luciano Rezzolla of the Institute for Theoretical Physics in Germany.

A comparison of black holes and gravastars. Image: Finq

“We here present, for the first time, a model for the creation of a static gravastar following a gravitational collapse of a spherical cloud of matter,” the team added.

The study models a pathway to the formation of a gravastar by imagining a uniform dust cloud collapsing toward a point at the center called a “de Sitter region,” which begins to expand. The inward collapse of the cloud and the outward repulsion of the de Sitter region, which is essentially an expanding mini-universe, results in an equilibrium state that would be virtually indistinguishable from a black hole to outside observers like us.

Finally, a hypothetical object for people who think black holes are not weird enough. Bonus points for the study’s brainy asides, such as this one: “Obviously, if a quantum-gravitational description were possible, the zero-size de Sitter bubble would be naturally replaced by a Planck-size bubble.”

Like, duh!

Stardust to stardust, radioactive ashes to radioactive ashes

Koll, Dominik et al. “The timing of the last r-process event near Earth from interstellar 60Fe, 244Pu and 247Cm deposition on Earth.” Nature Astronomy.

Speaking of the weird corpses left behind by massive stars, Earth is constantly getting sprinkled with their radioactive remains. That’s the finding of a study about a deep sea rock dredged up from nearly 16,000 feet under the Pacific Ocean that scientists found is bedazzled with the ashes of dead stars.

The rock is a chunk of ferromanganese crust, which forms on the ocean floor from minerals that precipitate from seawater. The rocks also capture rare heavy elements—such isotopes of plutonium, iron, and curium—that can only be sourced from cataclysmic cosmic events, such as explosive supernovae, or collisions between existing stellar corpses called neutron stars.
Lead author Dominik Koll with a sample of the ferromanganese crust. Image: Helmholz Zentrum Dresden
Using this rare record, scientists detected radioactive isotopes that suggest Earth has been passing through the fallout of an ancient “kilonova” that occurred when two neutron stars merged more than 100 million years ago. These kilonova mergers, also known as “r-process events,” leave a distant isotopic signature that includes the radioactive isotope plutonium-244, which the team detected in the rock.

“Our measured interstellar signatures suggest the occurrence of an old and rare r-process event leading to a diffuse [plutonium-244] background inside and outside the Local Bubble,” which is the term for our region of the galaxy, said researchers led by Dominik Koll of Helmholtz-Zentrum Dresden-Rossendorf. “The trajectory of the Solar System through the Galaxy could impact the recorded r-process radionuclide abundance on Earth or the Moon.”

In other words, we are all just casually wafting through the smoke of stellar pyres in our orbit around the galactic center. Hope that adds a little cosmic spice to your day.

May you live to the ripe old age of one year

Foley, Jessica et al. “Evolution of increased longevity and slowed ageing in a genus of tropical butterfly.” Nature Communications.

We’ll close, as all things should, with butterfly Methuselahs. To better understand the processes that drive aging and longevity, scientists looked to the Heliconius family of butterflies, known as heliconians, which are known to live substantially longer than its close relatives, though their lifespans hadn’t been previously examined in depth.
Heliconius butterflies. Image: Repeating Patterns of Mimicry. Meyer A, PLoS Biology, Vol. 4/10/2006, e341
The team was surprised to learn that these butterflies can live for nearly a year whereas their close relatives in their “tribe” live for mere weeks, revealing a “25-fold variation in recorded maximum lifespan across the tribe,” according to a new study.

“This range far exceeds previous estimates, and is among the largest ever recorded for such closely-related taxa (with comparable differences reported only for two groups of fish: rockfishes^, and roughies,” said researchers led by Jessica Foley of the University of Bristol. Indeed, if humans exhibited this range of lifespan diversity, plenty of us would be living past 1,000 years old.

The team also discovered that Myscelia cyaniris, which is not a heliconian, is “the longest-lived butterfly species to date based on data from butterfly exhibitors with a maximum reported lifespan of 380 days,” confirming that many butterfly families have evolved extreme longevity.

Unlike their close relatives, heliconians feed on pollen, which suggests that this special diet is part of the secret to their senescent success. While this discovery sounds like grounds for a grift aimed at the anti-aging movement, let it be known that eating pollen only works as an elixir for butterflies. The pollen can’t make you live forever. Death comes for us all. Happy Summer Solstice!

Thanks for reading! See you next week.

The timing of the last r-process event near Earth from interstellar 60Fe, 244Pu and 247Cm deposition on Earth - Nature Astronomy

By counting single atoms of 60Fe (which have a supernova origin), 244Pu and 247Cm (both formed via the r-process and independent of regular supernovae) in a deep-sea crust, the last actinide-producing r-process event near Earth is found to have occur…

^Nature

404 Media

2026-06-18 18:00:35

A New Fossil Discovery Just Rewrote 150 Years of Evolutionary Theory

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Ancient fossils have revealed that the earliest animals to walk on land more than 300 million years ago did not experience a metamorphosis similar to modern amphibians, a discovery that rewrites the evolutionary history of terrestrial vertebrates, according to a study published on Thursday in Science.

Humans and all other land-dwelling vertebrates descend from four-limbed “tetrapods” that left the seas to roam on land, an evolutionary process that took tens of millions of years. If you can recall your old biology textbook, this is probably what you were taught it looked like: the pioneering tetrapods adapted to land with a life cycle similar to frogs and toads, in which an aquatic larval phase, like a tadpole, is followed by metamorphosis into an amphibious adult form.

A pair of scientists at the Field Museum in Chicago looked at extremely rare fossils of hatchlings that span the “fin-to-limb” transition to identify direct evidence of this metamorphosis, such as the type of external gills seen on tadpoles. To their surprise, the researchers found no evidence of a transient larval phase in the early animals, thereby “falsifying hypotheses of an ancestral origin of metamorphosis,” according to the new study.

“There's still this sense that these [tetrapods] had this gilled larva that is fundamentally and anatomically different from the terrestrial adult,” said Jason Pardo, a research associate at the Field Museum and a postdoctoral fellow at Vilnius University in Lithuania who co-led the study, in a call with 404 Media. “There are a lot of reasons why that would make sense, because it's easier to make that transition from water to land if your baby, when it hatches out of the egg, is still fish-like, more or less. Then, you have this period of transition that allows it to get itself on land.”

“The problem is that we've never actually had direct evidence of that,” he continued. “The assumption has always been, ‘Of course we had a larval stage, and it would transition into an adult.’ But we didn't really have information that went one direction or the other.”

To fill this gap, Pardo and Arjan Mann, the Field Museum’s assistant curator of early tetrapods and the other co-lead of the study, scoured both public museum archives and private collections for fossils that captured the early hatchling phase of primordial tetrapods.

Such specimens are extremely rare because these baby animals were small and had developing bones that required ideal conditions for preservation. But Pardo and Mann were able to track down a handful of particularly intriguing fossils sourced from the Mazon Creek fossil beds in northern Illinois, which has preserved incredibly detailed snapshots of life as it existed about 310 million years ago, during the tail end of the fin-to-limb transition.

These animals included two embolomeres, which were crocodile-like predators, a snake-like aïstopod, and several megalichthyid fish. Some of the tetrapods were so young when they died that their fossils preserve abdominal yolk that the hatchlings were feeding off until they were mature enough to seek their own food.

This selection represents “the most phylogenetically extensive sample of stem tetrapod early developmental stages to date and a definitive documentation of stem tetrapod hatchling anatomy and life history,” according to the study.
Concept art of an embolomere hatchling next to an adult. Image: Gabriel Ugueto
“We've been trying to look at the smallest animals that we can get out of these sites, where we can actually get very early stage babies,” Pardo said. “This is after the initial transition from water to land, but we have animals that span that transition. We have animals that branched off before [the development of] fingers and toes, and animals that branched off after fingers and toes.”

“When we started to look at these fossils, we were expecting that we were going to get something that looked kind of like a metamorphosis,” he added. “What we ended up finding is that there was no such evidence at all.”

External gills, for instance, are a telltale feature of the metamorphosis observed in frogs and toads. They appear on freshly hatched tadpoles and are slowly absorbed into the body to become lungs. But the hatchlings showed no signs of these gills, or anything else on the “checklist” of a transient larval phase, Pardo said.

“It was very striking that none of the structures that we would look at seemed like larval features that we would expect to see,” he said. “It was quite hard to make sense of at first because, at this point, there’s a 150-year tradition of treating these animals as amphibians.”
Some of the early hatchling fossils studied by the team, including detailed preservation of eyes and soft tissues. The scale bar is 10 millimeters. Image: Jason Pardo, Arjann Mann, Lauer Foundation.
“What we ended up finding is that we can't actually justify any claim of metamorphosis in those animals that are transitioning across that water-to-land transition,” he added.

The results suggest that early tetrapods had the same basic anatomy, more or less, throughout their life cycle. This evolutionary strategy may have delayed the transition to land for much longer than previously assumed, as tetrapods slowly acclimated to life in a terrestrial habitat. Amphibian-style metamorphosis probably emerged well after tetrapods established their foothold on land, perhaps to maximize their colonization of diverse new land environments, rather than as a condition for getting out of the seas in the first place.

In addition to overturning conventional wisdom, the fossils offer a glimpse of the ancient trailblazers that took the first steps into a new realm hundreds of millions of years ago, paving the way for the rest of us. As a result of them gradually expanding onto land, these tetrapods became the progenitors of all vertebrate land animals. The exquisite fossils even include eerily preserved eyes in some cases, gazing out from a long-lost past.

“They look like they were around yesterday,” Pardo said. “You can see skin. Sometimes the animals have color patterns preserved. You can see the lenses in their eyes. You can see these really intricate and intimate details of these animals. You can understand this was a living animal. It's there.”

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404 Media

2026-06-13 19:10:27

Scientists Discover Vast Ancient ‘Necropolis’ Teeming With Strange New Creatures

Welcome back to the Abstract! Here are the studies this week that died in the deep, let nature call, tossed a galactic salad, and became interstellar voyeurs.

First, there’s a whale necropolis under the sea that is packed with ancient carcasses and teeming with new species. Then: a bygone world preserved in poop, the fruits of the universe’s labor, and a zoom lens for distant planets.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

A visit to the cetacean cemetery

Peng, Xiaotong; Zhou, Peng; Song, Xikun; Bianucci, Giovanni; Du. Mengran et al. “A 5.3-million-year-old deep-sea whale necropolis in the Diamantina Zone.” Nature.

Scientists have discovered an unprecedented underwater “necropolis” that contains the remains of hundreds of whales that died over the past five million years, scattered across 745 miles.

During dives in a deep sea submersible, researchers spotted whale bones submerged under more than four miles of the Diamantina Zone in the Indian Ocean, making this site the geographically largest, deepest, and oldest whale necropolis ever found. The graveyard is also teeming with species that may be “new to science” and subsist on these fortuitous “whale falls,” according to a new study.
youtube.com/embed/jYDl4c7ZwhQ?…
“The discovery of whale-fall communities in the Diamantina Zone at depths exceeding 6,700 meters establishes one of the deepest known whale-fall ecosystems in the ocean, extending the known depth range of such habitats by more than 2,500 meters,” said researchers co-led by Xiaotong Peng of China’s Institute of Deep-sea Science and Engineering.

“This area has a deep and extensive accumulation comprising five modern natural whale-fall communities and 476 fossil cetaceans recorded,” the team said.

Peng and his colleagues first spotted the necropolis during dives in early 2023 using the Fendouzhe submersible, which is capable of bringing crews to depths of nearly seven miles. The team quickly realized they had tapped into a scientific motherlode, complete with an immense fossil archive of extinct animals—mostly deep-diving beaked whales—along with recent whale falls that still support thriving ecosystems of crustaceans, molluscs, worms, and microbes.

“Bone-eating worms, gastropods, vesicomyid bivalves and brittle stars dominate the megafauna (more than several centimetres in size), reaching local densities up to 2,840 individuals per square metre,” the team said. “Most recovered taxa may be new to science.”

As for why this vast necropolis formed, beaked whales may be attracted to these deep waters due to the abundance of prey sources, such as squid and fish. Some might accidentally dive so deep that they experience decompression sickness or fatal exhaustion, becoming bonus bodies for seafloor ecosystems. The sinking carcasses are then funnelled into the Diamantina Zone because of its V-shaped topography, serving up a figurative feast for scientists (and a literal one for marine biota).
Various remains in the necropolis. Image: IDSSE
“As beaked whales are known primarily from rare strandings, their abundance, distribution and ecology remain poorly understood overall,” Peng and his colleagues concluded. “Our discovery of an accumulation of skeletal remains…provides an unparalleled source of information on these largely enigmatic cetaceans.”

Mariners have long dreaded ending up in Davy Jones’ locker, the proverbial resting ground of drowned sailors. It turns out that whales have a whole locker room down in the deep, where the bodies of countless leviathans blossom into fleeting hotspots of life.

In other news…

Bathroom blast from the past

Murchie, Tyler J. et al. “Ground squirrel coprolites preserve complex archives of ancient environmental DNA over 700,000 years.” Nature Communications.

The Klondike region of Canada’s Yukon territory is famous for the 19th-century gold rush that led hopeful prospectors to riches, ruin, and early graves. But now, scientists have found a very different type of valuable nugget in Klondike soil—ancient squirrel poops made by ancient squirrel bums as early as 700,000 years ago.

Scientists sequenced ancient environmental DNA (aeDNA) from these permafrosted scats, thereby opening up a poopy portal into the past. The fossilized feces, known as coprolites, contained genetic traces of mammoth, saber-tooth cat, horse, and bison, suggesting that these Ice Age rodents may have gnawed on the corpses of much larger megafauna. The coprolites also preserved DNA from hundreds of plant species, several insects, and a bevy of microbial and fungal strains.
youtube.com/embed/2HkRFLb-xlY?…
“The diversity and abundance of aeDNA recovered from the permafrost preserved, ground squirrel coprolites presented here underscores the immense value of Arctic rodent middens as repositories of Quaternary ecosystems,” said researchers led by Tyler J. Murchie of the Hakai Institute and McMaster University. “The ecological and evolutionary power of coprolites would appear to exceed that of both bone and sediment.”

As a bonus, the team refers to the rodent behind each coprolite as the “defecator,” in case anyone is seeking inspiration for a disgusting superhero concept.

Eat your galactic green peas

Gupta, Maitrayee et al. “Blueberry and Green Pea galaxies live in low-density environments.” Astronomy & Astrophysics.

The fruits of summer gardens are beginning to ripen here on Earth, but what about the pea patches and berry bushes of outer space? In a new study, astronomers examine a sampling of so-called “Green Pea” and “Blueberry” galaxies, which are small and compact systems that have extremely high star formation (“starburst”) rates.
Images of blueberry galaxies. Image: SDSS and Yang et al.
Named for their green and blue hues, these starry objects are thought by some scientists to be similar to the first galaxies that lit up the universe during the epoch of reionization more than 13 billion years ago, making them useful analogues of primordial galactic evolution.

“Within the diverse tapestry of galaxy populations, Green Pea and Blueberry galaxies represent particularly intriguing classes,” said researchers led by Maitrayee Gupta of the Astronomical Institute of the Czech Academy of Sciences. The galaxies “present an opportunity to gain a unique perspective” on the processes “driving cosmic reionisation,” the team added.

To that end, Gupta and her colleagues observed a selection of these galaxies and found that they “predominantly reside in isolated, low-density environments” which means that their intense starbursts are not driven by interactions with galactic neighbors, such as mergers. Instead, the team concluded that these recent starbursts are driven by internal processes, “reinforcing their role as nearby analogues of young, low-mass galaxies in the early Universe.”

If you’d like a more substantive galactic meal than peas and blueberries, may I recommend the Fried Egg Galaxy or the Hamburger Galaxy? Cap it off with a Milky Way for dessert.

Journey to the magic spyglass in space

Palos, Mario F. et al. “Curved Space Telescope: E-sail concept to the solar gravitational lens focal region.” Advances in Space Research.

There is a sweet spot in the outer wilds of the solar system, about 650 times the distance between Earth and the Sun, where it is theoretically possible to peer across interstellar space and spot surface features of exoplanets—including continents, oceans, or perhaps signs of life.

This phenomenon, known as the solar gravitational lens, is caused by the Sun’s gravity warping light from distant sources, essentially making it a stellar magnifying glass. It could be an incredible observational tool, but schlepping all the way out into the solar sticks is a huge challenge that has inspired a host of futuristic spaceflight concepts.
Concept art of an exoplanet observed through the solar gravitational lens. Image: Slava Turyshev/NASA
Now, scientists have proposed sending “an E-sail propelled spacecraft” called the Curved Space Telescope (CST) powered by the solar wind, a stream of charged particles emitted by the Sun. The probe would cruise through the solar system by deploying metallic tethers that tap into the solar wind and generate thrust from repulsion effects with its particles.

“One of the most interesting scientific objectives for a mission like CST would be the search for proof of extraterrestrial life,” said researchers led by Mario F. Palos of the University of Tartu. The team added that risky maneuvers, like slingshotting close to the Sun, would not be necessary for this mission, unlike previous proposals along these lines.

E-sails have never been tested in space and it’s anyone’s guess whether we’ll ever be able to send a mission to this interesting frontier. Still, it’s amazing to think about capturing close-ups of aliens on faraway exoplanets through a starry lens.

Thanks for reading! See you next week.

NGC 3628 - Wikipedia

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404 Media

2026-06-10 13:39:58

Scientists Just Accidentally Discovered a Strange, Hidden Rule of Human Nature

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Scientists have discovered that people walking in crowds tend to spontaneously turn counterclockwise—regardless of the environment, from schoolyards to busy settings—a surprise finding that “may represent a manifestation of a deeper biological principle of symmetry breaking,” according to a study published in Nature Communicationson Wednesday.

The bizarre finding was made essentially by accident; during the Covid-19 pandemic, researchers led by Iñaki Echeverría Huarte, a professor who studies pedestrian dynamics at the University of Navarra in Spain, studied the movements of pedestrians as part of a project to inform public health guidance on social distancing measures. But the videos revealed something unexpected—a consistent pattern of people turning counterclockwise when switching direction.

“The discovery was a serendipitous one (as sometimes happens in science),” Huarte told 404 Media in an email exchange that also included study co-author Claudio Feliciani, a professor who studies crowd dynamics at the University of Tokyo. “Since then, we have completed a series of experiments in Spain to test several hypotheses.”

“Curiously, during a conference where I was presenting the first part of this story, Claudio and I got talking and thought together: why not run an experiment in Japan?” he continued. “We were convinced the rotation would flip there, for several reasons (cultural ones, and the different type of avoidance behaviour that exists in Japan compared with Spain). However...it did not.”

Indeed, over the course of several experiments that took place in different environments in Spain and Japan, the counterclockwise bias persisted, suggesting that the team may have stumbled on a hidden rule of behavior. This preference showed up whether people were walking alone, or as part of a group, suggesting that it emerges from individuals, rather than as a collective phenomenon that is only present in crowds.
Overhead shot of motion in a schoolyard in Spain. Image: ©2026 Echeverría-Huarte et al. CC-BY-ND
“We are now only sure that it is not a collective but an individual bias, and that is very, very robust,” said Feliciani. However, the team stopped short of describing the bias as a “universal law” until more research is conducted, especially in more complex scenarios, such as emergency evacuations or dense crowds.

For this study, the researchers analyzed the movements of hundreds of participants, including adults who were instructed to move freely in different settings, teenagers playing in their schoolyard in Spain, and children at a nursery school in Japan. They accounted for individual variations such as handedness (left or right), age, as well as local social etiquette about expected behavior in crowds.

In each situation, the participants displayed a clear counterclockwise bias in the rotation of their bodies as they moved to a new direction. Each group also contained people who turned predominantly clockwise or showed no rotational bias, but they were fewer in number than the counterclockwise turners. The nursery school children showed an even stronger bias toward counterclockwise turns, suggesting that it may not be a learned behavior, but something biologically rooted.

“It is likely biomechanical, but exactly why is hard to tell,” said Feliciani. He added that this symmetry-breaking motion appears to be unusual in animals, and that “most animals show no bias, and humans are probably the exception or, for sure, a rare case.”

That said, the study outlined a few exceptions, including temnothorax ants, which tend to turn left while exploring, and budgies, which show preferences in certain lateral directions during flight.

Tip Jar

Huarte is working on follow-up studies that use virtual reality to shed light on the bias, but for now, this weird pattern remains unexplained. A better understanding of its origins could be useful for applications in busy settings like airports, museums, shopping centres, and other public spaces. It’s also an example of how unexpected behavior can be hidden in plain sight.

“I believe the real value of our discoveries lies in the fact that it can lead to other discoveries on how we process locomotor information and use them to move,” Feliciani concluded.

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Estimating density limits for walking pedestrians keeping a safe interpersonal distancing - Scientific Reports

Scientific Reports - Estimating density limits for walking pedestrians keeping a safe interpersonal distancing

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404 Media

2026-06-06 13:36:56

Scientists Discover Hidden Symmetry on Earth That Nobody Can Explain

Welcome back to the Abstract! Here are the studies this week that balanced it out, performed evasive maneuvers, decorated a love shack, and bred inside bones.

First, scientists discover a new “triple symmetry” on Earth that nobody can explain. Then: female dolphins keep tabs on coercive males, bowerbirds turn urban trash into urbane treasure, and the housing opportunities provided by dead dinos.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

Triple symmetry all across the sky

Zhang, Jianhao et al. “Earth’s east–west albedo symmetry.” Nature.

Scientists have discovered an unexplained “triple symmetry” in Earth’s albedo, meaning its ability to reflect sunlight. The finding deepens the mystery of Earth’s oddly-balanced brightness contrasts, which has been well documented in the near-perfectly matched albedos of the northern and southern hemispheres, despite the very different geographies of these two halves of the planet.

Researchers led by Jianhao Zhang of the University of Colorado Boulder now report the existence of “a unique and persistent east-west (E-W) albedo symmetry: the 27° E meridian divides the planet into an Eastern Hemisphere and a Western Hemisphere that reflect nearly identical amounts of sunlight,” according to the team’s study.

The hemispheres bisected by the 27° E meridian line have nearly-identical amounts of ice-free ocean, cloud cover, as well as planetary albedo, distinguishing this phenomenon as a “triple symmetry” that is distinct from the equatorially divided north-south symmetry, which only has matching albedos.

Zhang and his colleagues discovered the triple symmetry by examining 25 years of data (2001–2025) captured by NASA's Clouds and the Earth's Radiant Energy System (CERES) program. The satellite-mounted instruments measure the amount of solar energy Earth reflects back into space.

The east-west symmetry persisted over this dataset, with its greatest variations linked to the El Niño-Southern Oscillation (ENSO). For this reason, the team emphasized that the symmetry is essential to accurate projections on a rapidly warming world. Currently, “all models fail to capture…the triple-symmetry feature,” a problem that may be ”contributing to the persistent uncertainty in climate projections,” according to the study.

As for what causes this symmetry, nobody knows. It could be just a strange coincidence, or even weirder, an unknown process of planetary equilibrium. As we reported last year, the north-south albedo symmetry may be fading as both hemispheres get darker, with more pronounced effects in the North, so scientists are leaning toward the weird coincidence hypothesis.

“We cannot yet rule out the possibility that these hemispheric symmetries are simply coincidental features of the present climate state,” the team said in the study. “The importance of the E–W symmetry discovery, however, is beyond the identification of another ‘sweet spot’ of the Earth system.”

“It offers a powerful…constraint on state-of-the-art [Earth system models] and, more broadly, on our fundamental understanding of the Earth climate system,” the researchers concluded.

In other news…

Bottlenose bullies get bad reputations

Bouchard, Alice et al. “Female dolphins use individual vocal labels to track coercive males.” Proceedings of the National Academy of Sciences.

Female dolphins avoid sexually coercive males by keeping track of their signature whistles, according to scientists who observed how wild female Indo-Pacific bottlenose dolphins reacted to recorded playbacks of male vocalizations in the waters of Shark Bay, Australia.

To secure mating opportunities, coercive males “will bite, hit, or charge the female, chase her…and produce threat vocalizations termed pops—all to intimidate the female and control her movements,” said researchers led by Alice Bouchard of the University of Bristol. “Indeed, pops are only produced by males” and act “as an agonistic ‘come-hither’ signal, inducing the female to stay close to the popping male.”

Who could have guessed the term “popping male” could be so ominous? No wonder female dolphins keep them at fin’s length. Along those lines, the team found that females showed aversive responses to the recorded whistles of males known to have been coercive in the past.

Females appear to use “individual vocal labels to guide reproductive decision-making based on their experience of individual male behavior,” according to the study. Call it a whistle campaign.

Look at this stuff, isn’t it neat? This is how I reproductively compete

Evans, Caitlin F. and Kelley, Laura A. “Urbanization alters courtship signals in male great bowerbirds.” Royal Society Open Science.

For every popping dolphin in the seas, there is a lover bird in the trees. For the male great bowerbird (Chlamydera nuchalis), the key to attracting females isn’t biting or coercion, but the construction of elaborate shelters called bowers decorated with carefully selected trinkets for the enjoyment of potential mates.

Scientists have now discovered that urban bowerbirds may have an edge in their game compared to their rural counterparts, thanks to the dazzling decor options that can be upcycled from their city environments.
Male bowerbird poses in front of his love-nest of urban trinkets. Image: Caitlin Evans
The team catalogued nearly 4,000 decorations collected by Australian bowerbirds at Dreghorn Cattle Station, the rural site, and their urban counterparts in, literally, Townsville (the children’s book writes itself). The results suggest that "urban males may represent an adaptive change to a more attractive display, and that rural males are restricted in their displays by the materials available in their environment.”

“The two most common decorations in rural areas were green glass and green leaves/seeds, and in urban areas the two most common decorations were green glass and red wire,” said authors Caitlin F. Evans and Laura A. Kelley of the University of Exeter, “Decorations on urban bowers were over 10 times more likely to be anthropogenic…than decorations on rural bowers.”

While the city birds may have an easier time finding flashy ornaments, the use of plastics and other human-generated trash have posed dangers, such as entanglement or ingestion, for other species, though it has not been confirmed in bowerbirds. Glass shards and scarlet wires may make for beautiful displays, but never discount the risk of fatal attraction.

I’m so hungry, I could eat a titanosaur

Belaústegui, Zain et al. “The fossil record of insect bone bioerosion: Insights from titanosaur remains at Lo Hueco (Late Cretaceous, Spain) and implications for continental ichnofacies.” Earth-Science Reviews.

We’ll end, as all things should, with a 30,000-pound feast. Titanosaurs, the largest family of animals ever to walk on land, were so enormous as adults that predators basically left them alone (though they made for easy pickings as youngsters).

But once these dinosaurs shuffled off their metric-ton mortal coils, their corpses were devoured by scavengers—including small insects that bore into their bones, leaving permanent structures in their fossilized remains, known as “ichnofacies.”
Beetle chambers carved into titanosaur armor. Image: Belaústegui, Zain et al.
In a new study, paleontologists mapped out the pits, holes, burrows, and trails etched into Cretaceous titanosaur bones deposited in the exquisitely well-preserved Lo Hueco site in Cuenca, Spain. In particular, the results revealed idiosyncratic pupation chambers likely dug out by flesh-eating Cubiculum beetles to deposit larvae. The structures suggest that the dead dinos were exposed to open air for weeks on ancient floodplains as beetles were born and bred in their bones.

“Given the size of the titanosaurs…it is likely that at least part of their carcasses remained dry for long periods of time (several days and even months), and hence, to constitute a perfect scenario for insect colonization,” said researchers led by Zain Belaústegui of the University of Barcelona. “The large size of the carcasses involved (i.e., tons of decaying organic matter) may support specific and stable ecosystems during long periods of time.”

In other words, titanosaur skeletons served as luxury mansions long after their death, with beetle colonies etching in the equivalent of “we were here” notes that have lasted for 70 million years.

Thanks for reading! See you next week.

Baby Sauropods Were the Potato Chips of the Jurassic Era

Baby Sauropods Were the Potato Chips of the Jurassic Era: “Life was cheap in this ecosystem.”

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404 Media

2026-06-05 15:28:06

The U.S. Military Quietly Turned GPS Into a Global ‘Numbers Station,’ Evidence Suggests

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The U.S. military has likely been quietly broadcasting codes for its global encryption network using public GPS for nearly 20 years, turning each satellite into a hidden “numbers station,” according to Steven Murdoch, an information security expert, who detailed his findings in a new article in Inside GNSS.

That means every device that uses GPS has been receiving hidden government information for years, and nobody outside the military knew it until now.

Murdoch, a professor of security engineering and head of the Information Security Research Group at University College London, presented evidence that a 176-bit GPS sequence labelled “Subframe 4, Page 17” is encrypted material from the Pentagon’s Over-the-Air Distribution (OTAD) network, which delivers cryptographic keys to military personnel around the world.

“I think the evidence that it's for key transmission—for use in distributing the keys for accessing the military GPS signals—is pretty strong now,” Murdoch said in a call with 404 Media. He noted that the military has “specialized receivers that have the ability to have keys loaded into them” and “presumably have the ability to decrypt these special messages.”

In his new article, Murdoch described how this “forgotten 176-bit slot in the world’s most successful navigation signal turned out to be its quietest and most consequential broadcast.”

Murdoch first spotted the sequence more than a decade ago while he was a graduate student tasked with writing a decoder for raw GPS data while working on a project funded by the European Space Agency.

“I noticed that there was this random-looking data present in the subframe,” he recalled. “I looked at the specification, and thought that was a little bit unusual. I recorded a bunch of it to look for any obvious patterns, but that wasn't the main role of the project, so we moved on.”

From the beginning, he suspected that the subframe field contained encrypted transmissions because the data was so random. “Random data is actually very unusual to get in nature,” Murdoch said. “If you see it, either it's been carefully designed to be random—but then, why is someone sending out random data?—or it's encrypted data. I thought encrypted data is by far the most likely explanation.”

He returned to the subframe on and off over the years, and solicited guesses about its content on Stack Exchange in 2023. Ahmed Kamruddin, a master’s student at UCL, developed the project further in 2025. Then, this year, Murdoch put the last pieces of the puzzle together over several weeks by analyzing open archive Global Navigation Satellite System (GNSS) recordings collected since 2007 and kept by GFZ Helmholtz Centre for Geosciences.

This dataset included more than 12 million observations of Subframe 4, Page 17, yielding 3,994 unique 176-bit messages. Within this corpus, Murdoch pinpointed key-repeating “sentinels” including a pattern that appeared in February 2010 and was broadcast on and off across dozens of satellites for more than a decade.

Murdoch discovered that this particular sentinel was transmitted by all 31 operational satellites within a window of a few hours on May 26, 2011, potentially heralding the activation of a new operational system. He confirmed that this timeline coincided with the rollout of the military’s Over-the-Air Distribution (OTAD) and the Over-the-Air Rekeying (OTAR) by cross-referencing declassified documents, including a 2015 presentation about the dates of the operation.

“There was a perfect match between the timeline and that presentation and the change points that were automatically identified from the data,” Murdoch said. “That was the smoking gun that made me think: This is what it's for.”

These automated systems replaced the cumbersome manual distribution of cryptographic keying material, allowing military GPS receivers around the world to be rekeyed remotely through satellite broadcasts rather than through onsite procedures.

For the next 11 years, this expansive rekeying operation was overlooked in public GPS data. In 2022, the system entered a new phase, according to Murdoch’s analysis. The shift was characterized by a slowing in the message rotation rate. Later, in December 2023, broadcasts carrying a distinctive "TEXT" prefix emerged then gradually spread across the constellation.

Murdoch isn’t sure what explains the recent transition, though it could be a possible modernization of the infrastructure or the introduction of a new protocol. But to him, the bigger takeaway is that the signals were always available for anyone willing to take a closer look, a discovery that suggests that there could be more revelations hidden for the cryptographically curious among us.

“Every receiver in the world decodes Subframe 4, Page 17,” Murdoch said in his new article. “Almost none of them have ever looked at it. The lesson generalizes: There is more to learn from the bytes already arriving at our antennas than from the bytes we wish were specified differently. The data are publicly available. The signal is overhead, twice a day, every day.”

“Every GPS satellite is a numbers station,” he concluded. “The receivers were always listening. We just had not been.”

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Current Issue - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design

Current online issue of all featured global navigation satellite system related articles.

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404 Media

2026-05-30 13:00:00

‘Highly Plausible’ Aliens on Europa Are Earthlings’ Descendants, Study Says

Welcome back to the Abstract! Here are the stories this week that spread life across space, went stir crazy for science, held the colony together, and peacefully sat it out.

First, what if we went all the way to Europa only to find that some earthly bacteria already set up shop there? Then: red rum on the Red Planet, the palace intrigue of tropical wasps, and an afterlife in full lotus.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens, or subscribe to my personal newsletter the BeX Files.

That’s one small step for a dust-borne bacterium…

Osmanov, Zaza. “Earth as a potential source of life for Europa’s subsurface ocean.” International Journal of Astrobiology.

Europa, the ice moon of Jupiter, is considered one of the most promising candidates in the search for extraterrestrial life due to its vast subsurface ocean. But imagine what a trip it would be to not just find aliens on this world, but to learn that they originally hailed from Earth.

That’s the premise of a new study that investigates “the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface,” according to author Zaza Osmanov of the Free University of Tbilisi.

“Life on Earth originated at least 3.55 billion years ago, which implies that for approximately that long, Earth has been shedding life-bearing particles into surrounding space,” Osmanov said in the study. “Hence, if favorable conditions exist elsewhere in the Solar System and can be accessed by dust particles, the transport of life from Earth appears plausible and may have been occurring over the course of several billion years.”

This idea that life might travel between planets, or even star systems, is called panspermia. In addition to Earth life potentially expanding beyond our planet, scientists have previously speculated that life on Earth was itself seeded by microbes from another world, such as Mars.

To game out a scenario in which earthly bacteria might reach Europa, Osmanov estimated the rate at which dust-borne bacteria is dislodged from Earth by impacts and how it might then endure a long journey through space and survive a crash into the icescape of Europa.

He concluded that many trillions of life-bearing dust grains from Earth could have reached the moon’s surface over tens of millions of years. From there, surviving microbes may have spent generations shimmying down through cracks in its ice shell, which is dozens of miles thick, into the dark waters of the ocean below.
A close-up of the fractures in Europa’s ice shell. Image: NASA/JPL/University of Arizona
Though the deck would be stacked against these microbes, the high number of dust particles that Earth sloughs off into space “renders the existence of life on Europa highly plausible,” according to the study.

It’s worth noting that panspermia remains a topic of heated academic debate, in part because there are so many uncertainties about the process. For example, H. Jay Melosh, the late geophysicist and panspermia expert, also assessed the odds that Earth life could relocate to Europa and came to the opposite conclusion as Osmanov.

“If life should be found in the oceans of Europa or Enceladus, it is very likely that it’s indigenous rather than seeded from Earth, Mars or (especially) another solar system," Melosh said while presenting findings at the 2019 meeting of the American Geophysical Union, according to Space.com.

Ultimately, we won’t know until we go! NASA’s Europa Clipper is currently on its way to Jupiter to take a closer look at its namesake moon from orbit, and to scout out potential sites for surface exploration in the future. Perhaps decades from now we’ll finally be able to answer the tantalizing question of whether the seas of Europa are inhabited—and if so, if the aliens are homegrown or descended from spacefaring Earthlings.

In other news…

The Overlook Hotel, but it’s in space

Cantisani, Andrea, Schmutz, Jan B., et al. “Social interactions in isolated, confined, and extreme environments: A study of Antarctic winter teams using wearable sensors.” Proceedings of the National Academy of Sciences.

It’s one thing for a bacterium to make an interplanetary voyage; sending humans across deep space is orders of magnitude harder—and not just because we are flimsy mortal fleshbags. There is also the psychological toll of spending months or years in a confined space on a long-duration mission, such a trip to Mars.

To anticipate these challenges, scientists enlisted 12 crew members on a 10-month overwintering mission at Antarctica’s Concordia Station to self-report feelings of loneliness and paranoia, while wearing proximity sensors that allowed the team to monitor their movements.
The Concordia Station, a French–Italian research facility on the Antarctic plateau. Image: Jessica Struder/ University of Zurich
The results revealed “a progressive deterioration in both individual psychological outcome and team dynamics” in which “loneliness and paranoid thoughts increased over time,” according to researchers co-led by Andrea Cantisani of the University of Bern and Jan Schmutz of the University of Zurich.

The team even singled out one participant who “reported unusually high scores…corresponding to severe levels of paranoid ideation.” Reading the study, it’s hard not to be reminded of John Carpenter's The Thing, or the descent into space madness depicted in movies like Event Horizon or Sunshine.

Indeed, the authors shouted out Stephen King’s The Shining as a fictional precursor to the study’s finding that “prolonged isolation [and] constant proximity does not necessarily strengthen relationships but can instead amplify tension, mistrust, and psychological strain.”

In other words, if astronauts start seeing ghostly masked revelers, murdered children, and mercurial bartenders popping up in their Mars base, it’s time to pack it in and head back to Earth.

Stirring up a wasp’s nest—for science

Corbett, Owen R. et al. “Compensation of labour by noncompetitive individuals mitigates costs of aggressive succession contest in a social wasp.” Animal Behaviour.

Speaking of hostile social dynamics, it’s time to return to the “dynastic violence" beat. Long-time readers of this newsletter will know that I am a sucker for succession battles in eusocial animals such as naked mole rats or matricidal ants—which are ruled over by one breeding female queen.

This week, scientists updated the genre by watching what happens when you remove queens of the tropical wasp species Polistes canadensis, a shift that increased colony-level aggression “approximately tenfold,” according to a new study.

In the ensuing power vacuum, rival females vied for the crown through aggressive behaviors including bites, tackles, stings, and air fights. But even as some females took up arms (and stingers), the team was surprised to observe other wasps stepping into foraging or worker roles they had never occupied before to prevent the colony from collapsing in the chaotic interregnum.
Screenshot from the study. Image: Corbett, Owen R. et al.
“Contrary to our predictions, these findings support the theory that some form of compensatory mechanism exists in this species, buffering the conflict of queen succession,” said researchers led by Owen R. Corbett of University College London. “This system, in which some individuals compete while others compensate, could be what allows species like P. canadensis to maintain colony function despite aggressive contest-based succession.”

To channel Cersei Lannister: When you play the game of thrones, you win or you…compensate. While that doesn’t have quite the same ring as the original quote, the wasp colonies definitely weathered their dynastic struggles better than Westeros in the end.

Live by the lotus, die by the lotus

Sun, Chenshuang et al. Multidisciplinary analysis reveals the genetic and dietary structure of the seated burials from Tang Dynasty Chang’an.” Journal of Archaeological Sciences: Reports.

Last, it’s time to take a seat—for eternity. That’s the idea behind a rare funerary custom called “seated burial,” in which bodies are arranged in an upright sitting posture, in contrast to the far more common practice of being “laid to rest” in a supine pose.

In a new study, archaeologists examined four individuals who lived between the 7th and 9th centuries in what was then called the Chang’an region of northwest China and were buried in seated poses. The study offers “the first direct genetic evidence” to counter predictions that these burials imply a monastic lifestyle or a particular ethnic lineage, according to researchers led by Chenshuang Sun of Fudan University in Shanghai.

“Our genomic data contradicts the hypothesis that seated burials have a unique origin from ancestors in northern or northeastern Asia” as “we find no evidence of significant differences between seated burial individuals and their contemporaries,” the team concluded. “Although Buddhist symbolic artifacts, such as pagoda-shaped jars, were found in one tomb, isotopic evidence contradicts strict adherence to vegetarian Buddhist precepts.”

In addition to refuting the special status of the skeletal sitters, the study also includes interesting asides, such as records of Buddhist monks who ended up in “seated death” after “passing away in the full-lotus position.”

Seated burials have been unearthed across the globe, serving as a reminder to us all that we don’t have to take death lying down.

Thanks for reading! See you next week.

A Lost Planet Created the Moon. Now, We Know Where It Came From.

The remains of Theia are scattered deep inside the Earth and its satellite. By analyzing these remnants, scientists have proposed an origin.

^{Becky Ferreira (404 Media)}

404 Media

2026-05-28 15:28:47

The Sun Is Undergoing a Mysterious Change and Nobody Knows Why

The Sun is experiencing “striking” long-term shifts in its behavior that have gone undiscovered for more than a decade, according to a study published in the Monthly Notices of the Royal Astronomical Society on Wednesday.

The Sun passes through a cycle of high and low activity that lasts roughly 11 years and is caused by variations in the star’s magnetic activity. This activity peaks at a solar maximum, producing more frequent sunspots and higher radio flux, which are known as surface “proxies” of intense magnetism, as well as dramatic eruptions like solar flares and coronal mass ejections. At solar minimum, when magnetic activity winds down, the Sun enters a quieter phase. Throughout the cycle, sound waves known as p-modes oscillate near the surface of the Sun, providing clues about its internal structure.

All of the above is well known, but using new tools, astronomers have just discovered a weird mismatch in surface and p-mode signals that emerged more than a decade ago and has become especially pronounced in the current epoch, Cycle 25, which began in 2019.

“Essentially, we can use the p-modes as a proxy and a probe of activity underneath the surface of the Sun, because the frequencies change in response to the changing magnetic field,” said Bill Chaplin, a professor of astrophysics at the University of Birmingham who led the study, in a call with 404 Media.

“The sunspot number and the radio flux are basically proxies of the total amount of magnetic flux,” he continued. “What we're doing with the p-modes is saying: What is actually happening beneath the visible surface?”
Graphic illustrating the p-mode oscillations in recent solar cycles. Image: W.J. Chaplin
To answer that question, Chaplin and his colleagues examined four decades of observations from the Birmingham Solar Oscillations Network (BiSON), a collection of six remote solar observatories located around the world that have tracked the Sun’s oscillations since 1976.

While astronomers have monitored sunspots for centuries, BiSON has enabled researchers to monitor long-term shifts in “helioseismology,” which measures the seismic activity inside the Sun, a dataset that has led to the recent discovery of so-called "glitches" and other previously undetectable solar phenomena.

“There's a tendency to think that because we've only had data on a few cycles, that all cycles look like that, and that they copy and repeat,” Chaplin said. “I think what's becoming clear is that that isn't the case. No cycle is the same as another.”

The new study revealed that Cycle 25 shows stronger high-frequency p-mode activity just below the surface compared to recent cycles, but that it also appears weaker in terms of surface proxies, meaning it is showing comparatively fewer sunspots and reduced radio flux. This discrepancy hints that magnetic activity has become increasingly confined to a region of several hundred miles under the surface with each successive cycle, though the underlying reason for this change is unclear.

“We saw this really clear signal in the high frequency modes,” said Chaplin. “You can see in the high frequency modes that the current cycle is as strong as Cycles 22 and 23 and that the picture looks very different in the proxies.”

The results suggest that surface proxies, while valuable as rough estimates of magnetic activity, don’t provide the full picture of the roiling dynamics playing out under the solar surface. Chaplin and his colleagues note that several other studies have presented evidence for long-term changes in near-surface solar phenomena, though it will take more research to understand what is driving these trends.

To that end, the team plans to continue observing Cycle 25, which just passed its maximum and is expected to close out with a minimum toward the end of the 2020s. The researchers speculated that the structural changes may be linked either to the longer Hale cycle, which is a period covering two solar cycles—roughly 22 years. Since the Sun’s magnetic poles flip after each solar cycle, the Hale cycle measures the time it takes for the Sun to return to its original magnetic state.

These long-term observations are slowly peeling back the enigmatic inner workings of the Sun, especially the solar dynamo—the process that generates its magnetic field—which remains poorly understood. These efforts could help refine forecasts of hazardous space weather near Earth, while also shedding light on the behavior of other stars.

“Getting more robust space weather predictions is important, but also, from the science point of view, there is [a need] for a better understanding of the dynamo, and how the dynamo changes on long timescales,” Chaplin said.

“Helioseismology is important because it enables you to see inside the Sun, which is something that you can't do by any other means,” he concluded.

404 Media

2026-05-16 13:00:34

Scientists Discover Strange New Crystal Formed by Nuclear Blast

Welcome back to the Abstract! Here are the studies this week that were long in the tooth, trapped in the lattice, unearthed in Thailand, and entombed in post-apocalyptic waters.

First, scientists discover that even Neanderthals had to go to the dentist. Then: a nuke-born crystal, a 60,000-pound herbivore, and life after the death of most species on the planet.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens or subscribe to my personal newsletter the BeX Files.

A trip to the Neanderthal dentist

Zubova, Alisa V. et al. “Earliest evidence for invasive mitigation of dental caries by Neanderthals.” PLOS One.

Neanderthals performed dental interventions at least 59,000 years ago, pushing the timeline of dentistry back by tens of thousands of years, according to a study about a molar from Chagyrskaya Cave in southwestern Siberia.

Early humans used rudimentary dental tools, like toothpicks, for well over a million years. But scientists have now identified evidence that Neanderthals used drills to treat cavities at the Siberian site, performing an Ice Age version of a root canal. Previously, the oldest tooth that showed signs of a dental checkupt belonged to “Villabruna,” a prehistoric human male who lived in Italy 14,000 years ago.

The remnants of the Neanderthal tooth adds to a growing body of research that has overturned the stereotype of Neanderthals as cognitively inferior to Homo sapiens and hints at “cognitive convergence” between the two species, according to the study.
The Chagyrskaya Cave molar. Image: Zubova et al., 2026, PLOS One, CC-BY 4.0
The Chagyrskaya Cave tooth shows “evidence of two distinct types of manipulations requiring different tools, in addition to the drilling/rotating technique, necessitating complex finger movements,” said researchers led by Alisa Zubova from the Peter the Great Museum of Anthropology and Ethnography (Kunstkamera).

The study suggests that Neanderthals at this site “possessed the cognitive capacity to intuit the source of pain, comprehend the feasibility of its elimination, and deliberately select the most efficacious dental intervention,” the team added. “The technical proficiency required for this procedure…reflects a capacity for causal reasoning, anticipatory planning, and volitional endurance, contradicting earlier assumptions regarding Neanderthal behavioral limitations.”

It's not clear if this Neanderthal patient got a complimentary toothpick at the end of the visit, but at the very least, they received some temporary relief from a bad toothache.

In other news…

Now I have become Death, maker of crystals

Bindi, Luca et al. “Extreme nonequilibrium synthesis of a Ca–Cu–Si clathrate during the Trinity nuclear test.” Proceedings of the National Academy of Sciences.

Scientists have discovered a weird new type of crystal in the ashes of the Trinity test, the first detonation of a nuclear bomb, which took place in the early morning of July 16, 1945, in New Mexico.

Trinity’s “gadget” unleashed a powerful fireball that vaporized its test tower and transformed the desert sand into a glassy residue called trinitite. For decades, researchers have found novel and bizarre compounds in the fallout. A new study now reports the first known instance of a clathrate structure—a crystal lattice that can trap “guest” molecules inside its cagelike scaffolding—in red trinitite.
The sample of red trinitite that contained the clathrate. Image: Bindi, Luca et al.
“The discovery of this phase represents the first crystallographically confirmed identification of a clathrate structure among the solid-state products of a nuclear explosion,” said researchers led by Luca Bindi of the University of Florence.

“This work underscores how rare, high-energy events—such as nuclear detonations, lightning strikes, and hypervelocity impacts—serve as natural laboratories for producing unexpected crystalline matter,” the team added.

In addition to being one of the most pivotal split-seconds in history, the Trinity test spun sand into exotic materials that are still generating discoveries more than 80 years later.

A huge new Thai-nosaur

Sethapanichsakul, Thitiwoot and Khansubha, Sasa-On et al. “The first sauropod dinosaur from the Lower Cretaceous Khok Kruat Formation of Thailand enriches the diversity of somphospondylan titanosauriforms in southeast Asia.” Scientific Reports.

Meet the largest dinosaur ever found in Southeast Asia: Nagatitan chaiyaphumensis, a hulking sauropod that lived more than 100 million years ago in what is now Thailand.

Weighing in at an estimated 60,000 pounds and measuring nearly 90 feet from head to tail-tip, this massive herbivore belonged to the titanosaur family, the largest animals ever to walk on land.
Schematic representation of the skeleton of Nagatitan chaiyaphumensis with preserved bones highlighted in yellow. The bar is one meter. Image: Sethapanichsakul, Thitiwoot and Khansubha, Sasa-On et al.
“We estimate a body mass of 25–28 tonnes for Nagatitan, and suggest it was part of a broader middle Cretaceous body size increase in Asian titanosauriforms, facilitated by rising temperatures and expanded suitable habitat,” said researchers co-led by Thitiwoot Sethapanichsakul of University College London and Sasa-On Khansubha of Sirindhorn Museum in Thailand.

“The discovery of Nagatitan expands the known diversity of Southeast Asian sauropods and improves our understanding of titanosauriform biogeography within the region,” the team added.

While it’s mind-boggling to imagine a 90-foot-long, 25-tonne animal casually ambling around, Nagatitan is only mid-sized for a titanosaur. The biggest behemoths in this family may have exceeded 120 feet in length and boasted 130,000 pounds of fully plant-powered body mass.

With that said, the all-time heavyweight champion of the animal kingdom is our own contemporary, the blue whale, which tips the scales at an astonishing 400,000 pounds. Have you ever felt so puny in your life?

Life goes on, re-gar-dless

Wilson, Jacob D. et al. “The skull and pectoral girdle of a large gar that lived ∼2000 years after the Cretaceous/Paleogene mass extinction event.” Journal of Vertebrate Paleontology.

The last titanosaurs were wiped out by the asteroid that brought the age of dinosaurs to a sudden and brutal end 66 million years ago, killing off about two-thirds of all species on Earth. But though the space rock eradicated the land giants, some animals managed to pull through, including a large fish that lived within 2,000 years of the impact.

Scientists led by Jacob Wilson of the Denver Museum of Nature & Science described the anatomy of a gar and weighed in on its possible taxonomy, building on the initial 2022 study that first reported the specimen. Measuring about five feet in length, this gar inhabited a post-apocalyptic world that is preserved within the Fort Union Formation of North Dakota.
Diagram of fossils, with scale model. Image: Brownstein, Chase Doran et al., 2022
The specimen “is notable both for its size (more than 1 meter) and its precise stratigraphic placement 18 centimeters above the Cretaceous/Paleogene (K/Pg) boundary clay,” the team said. “Our conclusions support the inference that gars were prominent members of freshwater ecosystems and, in turn, freshwater ecosystems were capable of supporting large-bodied predators within ∼2000 years after the K/Pg extinction.”

This gar hatched into an eerily empty ecosphere, mere centuries after a planetary nightmare, yet it still grew into a fisherman’s dream catch. It’s a testament to the resilience of life on Earth, which could not be fully stomped out even by a direct cosmic punch to the face.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

^{Hachette Book Group}

404 Media

2026-05-14 18:00:56

DOGE Cuts Unleashed a Deadly Wave of Violence Across Africa, Study Finds

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The sudden shuttering of the United States Agency for International Development (USAID) by DOGE in 2025 is associated with a rise in violent conflicts across Africa, according to a study published on Thursday in Science.

Days into Donald Trump’s second term, his administration began rapidly dismantling USAID, which had, up until that point, been the world’s largest national humanitarian donor. Elon Musk, who spearheaded the Department of Government Efficiency, announced that his team had fed the agency “into the woodchipper” in February 2025. Tracking models suggest the collapse of USAID may have already caused 762,000 preventable deaths, of which 500,000 are children, and the cuts could lead to more than nine million preventable deaths by 2030, according to a study published in February 2026.

Now, a team reports “the earliest evidence of the impact of cuts to USAID on the incidence of violent events” which suggests that “the radical cuts…led to an increase in conflict in the regions that received the most aid from the United States,” according to the new study.

“What we find is that with the USAID shutdown, there was a rapid increase in the likelihood of violence, the severity of violence, and the lethality of violence across nearly one thousand subnational administrative units across Africa,” said Austin L. Wright, study co-author and associate professor and director of strategic initiatives at the Harris School of Public Policy at the University of Chicago, in a call with 404 Media.

In regions that received the most support from USAID, the cuts were associated with a 6.5 percent probability of any conflict event, compared to regions that received no aid. To get a sense of the devastating impact of that statistic, here’s what the study reports:

“The probability of protests and riots was 10% greater, the number of conflict events increased by 10.6%, battle counts increased by 6.9%, and battle-related fatalities increased by 9.3%. Event-study analysis confirmed no preexisting differences in conflict trends between high- and low-exposure regions before the shutdown. Effects are of similar size, with a 12.3% relative increase in the number of conflict events.“

Between 2021 and 2024, USAID is estimated to have saved 91 million lives, about a third of which are children under 5 years old. The agency was created by John F. Kennedy in 1961 and, in the years preceding Trump’s shutdown of the agency, accounted for less than 1 percent of total U.S. federal spending.

The impact of aid on communities is complex and context-dependent. Aid may reduce conflicts in cases where the opportunity costs of violence are mitigated by an influx of resources, known as the “opportunity cost effect.” But aid can also fuel conflicts over the handling and distribution of those resources, known as the “rapacity effect.”

The collapse of USAID, which is unprecedented in its scale and speed, has produced the worst of both worlds, according to the new study.
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“When those funds rapidly go away, it's a shock to the opportunity cost, and now it becomes more and more attractive to participate in what we might call the unproductive part of the economy, which is participating in violence, engaging in crime, and other activities,” Wright said. “But because the shutdown was so rapid, it didn't really have an opportunity to bind on the rapacity effect, because it's not as if the bridges, roads, or full-on infrastructure went away. The things that individuals or groups might fight over were still present.”

“It’s a bit of a ticking time bomb, because you're both removing the conflict-reducing side of aid, while leaving behind the conflict-enhancing part of aid,” he added.

To quantify the impact of the cuts on violence, Wright and his colleagues examined the Geocoded Official Development Assistance Dataset (GODAD), which monitors geolocated information regarding foreign aid disbursements, alongside the Armed Conflict Location and Event Data (ACLED), which tracks violent events.

The overlapping datasets revealed macro-level patterns between aid distribution and violence in the wake of the cuts, including significant upticks of violence in areas that had previously received large amounts of aid, or where the population had less control over their government due to weaker executive constraints.

Moreover, this increase in conflict has persisted over the course of months and may continue in areas that fall into “conflict traps” defined by self-perpetuating cycles of violence.

These impacts are catastrophic for people who had relied on USAID, as evidenced by the estimated death tolls, and the increased risk of violent conflicts and upheavals. They also present new vulnerabilities for the United States and its allies. Though USAID had an altruistic mission, the agency also served as a vector of soft power and an early-warning system for tracking public health risks, like pandemics. The loss of the agency has already caused national security issues for the U.S., such as the seizure of discarded USAID supplies by Iran-backed Houthi groups in Yemen.

“Those insecurities don't stay where they're created; they travel,” Wright said. “That unfortunately means that the vulnerabilities that are being created at the moment will likely have long-run consequences of creating insecurity that directly impacts the safety of Americans.”

Moreover, Trump’s demolition of USAID prompted many allies in Europe to pull back on their own foreign aid, exacerbating the effects. Though other humanitarian organizations are struggling to mitigate the consequences, the loss of trust caused by the shutdown of USAID is likely permanent, with ominous long-term consequences.

“Even if you reactivated USAID and pretended as if it never went away, you can't reverse these effects because you've already communicated your bad faith behavior,” Wright said. “There is nothing quite like the reputational bomb of simply shutting down an agency, and what that does to the reputation that the U.S. might have if it ever wanted to reinitiate its interventions.”

“From the soft power lens, and a global lens, the reputational effects, I think, are tremendous and will create a bunch of wedges and inefficiencies,” he concluded. “If one simply wanted to restart USAID, it's going to cost much more to rebuild than simply the same budget all over again.”

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ACLED

ACLED is an independent, impartial conflict monitor providing realtime data and analysis for all violent conflict and protests in all countries and territories across the world.

^ACLED

404 Media

2026-05-09 13:00:26

Scientists Studied 906 Mafia Marriages and Found Something Surprising

Welcome back to the Abstract! Here are the studies this week that got ID’d, caught on camera, internally probed, and married off.

First, scientists have confirmed the identities of four sailors who died in a grisly Victorian voyage. Then: the sights and sounds of an Arctic seafloor, a glimpse into the guts of ice giants, and a wedding kiss of death.

As always, for more of my work, check out my bookFirst Contact: The Story of Our Obsession with Aliens or subscribe to my personal newsletter the BeX Files.

Putting a face, and names, to lost Arctic sailors

Stenton, Douglas R. et al. “DNA identifications of three 1845 Franklin expedition sailors from HMS Erebus.” Journal of Archaeological Science: Reports.

Stenton, Douglas R. et al “‘Some very hard ground to heave’: DNA identification of Harry Peglar, Captain of the Foretop, HMS Terror.” Polar Record.

Scientists have identified four men who died in Sir John Franklin’s disastrous expedition of 1845, a British mission to chart a passage through the Arctic that ended in misery, starvation, and cannibalism, leaving no survivors.

“Since the late nineteenth century the coast of Erebus Bay on King William Island, Nunavut, has been a focal point for historical and archaeological investigations of the 1845 Franklin Northwest Passage expedition,” said researchers led by Douglas Stenton of the University of Waterloo. “Its significance comes from the nature and volume of materials derived from an extraordinary and ultimately tragic event: the fatal attempt by 105 surviving sailors to escape their icebound ships in the spring of 1848 by walking hundreds of kilometres south to the mainland of North America.”
Graves at Franklin Camp on Beechey Island, Nunavut, Canada that memorialize Franklin expedition crew members. Image: Gordon Leggett
Using DNA extracted from skeletal remains, a study has confirmed that the 180-year-old bones belong to the able seaman William Orren, the ship's boy David Young, the officers' steward John Bridgens, and captain of the foretop Harry Peglar. Orren, Young, and Bridgens served on HMS Erebus, the expedition’s flagship, and their remains ended up in Erebus Bay on Canada’s King William Island.

The remains of Peglar, who served on the secondary vessel HMS Terror, were found nearly 80 miles away from the others and are reported in a separate study led by Stenton. Stenton’s team has previously identified the Erebus engineer John Gregory as well as the Captain of Erebus, James Fitzjames, whose remains were subject to cannibalism.

The researchers matched the DNA of these sailors to samples provided by living descendants or relatives to conclusively confirm their identities. In addition to solving a scientific mystery, this process literally puts a face to one man as the team included a reconstructed portrait of David Young, who was around 20 when he died.
David Young, Boy 1st Class from the HMS Erebus, in a 2D Forensic Facial Reconstruction. Image: Diana Trepkov, Investigative Forensic Artist
The results also help to piece together key details of the nightmarish fates that befell these sailors as they endured starvation, exposure, disease, and despair.

“For their descendants, the identifications of John Bridgens, David Young, and William Orren reveal that, like John Gregory, they had survived the first three years of the expedition,” the researchers said. “They also unveil the locations where their deaths occurred, and the fact that none of the men were alone when they died.”

Peglar did die alone, however, and he remains the only member of the Terror crew who has been identified. In the study about his farflung remains, the team concludes with a passage Peglar wrote a few days before the survivors abandoned their stuck vessels and embarked on the retreat that would ultimately kill them all.

Peglar noted the need to procure new boots as “we have got some very hard ground to heave.”

In other news…

Scenes from an Arctic seafloor

Podolskiy, Evgeny A. et al. “Seafloor video-acoustic monitoring in a Greenlandic glacial fjord records hyperbenthos, backward-swimming fish, and narwhals.” PLOS One.

Though the Arctic has many deadly perils, this region is also home to some of the most amazing lifeforms found anywhere on the planet. Scientists have now captured rare footage and recordings of “a highly turbulent environment” on the seafloor of a glacial fjord in northwest Greenland, according to a study.

Here, at depths of about 850 feet, the songs of narwhals reverberate along the seafloor, crustaceans called copepods move in sudden hops, and “marine snow” made of particulate matter falls in blizzardlike bursts. A snailfish was also caught on tape making a particularly memorable exit.
youtube.com/embed/-BH92llcfpA?…
“One snailfish showed peculiar backward swimming, passively drifting backward with the current,” said researchers led by Evgeny A. Podolskiy of Hokkaido University. “It curled its tail and remained motionless for at least 16 seconds before disappearing from view.”

You’ve heard of the Irish Goodbye and the Minnesota Goodbye, but I’m not sure anything can top the Greenlandic Glacial Fjord Snailfish Goodbye.

The flavorful fillings of ice giants

Ramirez, Vanesa et al. “Reassessing planetary composition: Evidence of rock-dominated envelopes in Uranus and Neptune.” Astronomy & Astrophysics.

What’s inside Uranus? Or Neptune, for that matter? Nobody really knows, and we have to rely on models until someone can figure out how to get a direct look inside the guts of these ice giants.

To that end, researchers ran simulations of the possible evolution and composition of the two planets’ interiors based in part on observations of their atmospheres. The results suggest that “the deep interiors of the two planets exhibit distinct compositions” with Neptune having “relatively rock-rich mantles…whereas Uranus is inferred to have more ice-rich mantles,” according to researchers led by Vanesa Ramirez of Leiden University.

“Our results indicate fundamental differences in the internal architectures of Uranus and Neptune, challenging the traditional view of these planets as compositional twins,” the team added.

To put in confectionary terms, Neptune appears to be more of a rocky road, while Uranus may be a refreshing ice slushy. Either way, the study underscores how much there is left to learn about these solar system worlds.

Mob Wives, but it’s science

Catino, Maurizio et al. “Marrying for power: Gendered alliances in mafias.” PLOS One.

In a genuinely gangster new study, scientists took a whack at unraveling the marital power dynamics at work within the 'Ndrangheta mafia syndicate, an infamous crime ring built around familial ties.

“Interfamily marriages have long been recognized as a strategic resource in mafia organizations,” said researchers led by Maurizio Catino of the University of Milano-Bicocca. “Drawing on judicial records documenting…906 marriages among 623 ’Ndrangheta clans, we analyze how matrimonial ties relate to power and cohesion within the organization.”

While nuptials between the most powerful clans are important for group cohesion, the team found that the marriages among less influential families were the real “load-bearing” relationships in the network. In part, this is because boss families tended to be “associated with redundant, overlapping unions” whereas there is more elasticity in the outer circles.
Say hello to my little chart. Image: Catino, Maurizio et al.
The study is packed with wild and often disturbing anecdotes—and some that seem directly lifted from a Scorsese flick.

For instance, take the case of Emanuele Mancuso, whose aunt tried to dissuade him from cooperating with law enforcement with this pitch-perfect guilt trip: “How is your mother doing? She’s not well! She knows she no longer has a son, how do you think she feels?”

It’s stressful enough to plan a wedding without the additional pressure of figuring out how you will fit into an international criminal syndicate. You can only hope the union will end in holy (not holey) matrimony.

Thanks for reading! See you next week.

An Update on the End of the World

Cannibalism, the cheese mummy, and a star-broiled Earth.

^{Becky Ferreira (404 Media)}

404 Media

2026-04-25 13:00:48

A Mysterious Golden Orb Was Discovered Under the Sea. We Finally Know What It Is.

Welcome back to the Abstract! Here are the stories this week that battled rivals, devoured sharks, solved riddles, and left fingerprints in the sky.

First, scientists chronicle the victories of a jousting champion unlike any other in all of history. Then: it turns out that krakens are real, the mystery of the Golden Orb is solved, and the Northern winds are changing.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliensor subscribe to my personal newsletter the BeX Files.

Peak Beak: The Bruce Story

Grabham, Alexander A. et al. “A disabled kea parrot is the alpha male of his circus.” Current Biology.

Meet Bruce, a kea parrot that lost the top half of his beak about 12 years ago. Despite his injury, Bruce is the undisputed alpha male of his “circus,” the term for a group of kea. He remains undefeated in dominance battles with rivals, allowing him to live a life of luxury in his long-time home at Willowbank Wildlife Reserve in New Zealand.

Now, Bruce has inspired one of the most delightful questions ever asked in an academic paper: “How does the kea missing his upper beak win every fight and not get stressed?”

The answer is Bruce’s invention of “beak jousting,” a set of moves that has ruffled feathers among his “intact” rivals, allowing him to ascend to the top of the pecking order.

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“Bruce deployed his exposed lower beak in jousting thrusts, both at close range, with an extension of his neck, and from afar, with a run or jump that left him overbalanced forward with the force of motion,” said researchers led by Alexander Grabham of the University of Canterbury.

“Bruce has therefore weaponised his disability through behavioural innovation: jousting is a behaviour not observed in other kea, with different motor patterns, that targets a wider range of body parts,” the team said.

In this way, Bruce has maintained his position as the ringleader of the circus, a position that comes with appreciable benefits. The other birds give him dibs at all feeders in the preserve where he eats undisturbed, plus, he is the only male that is groomed by other males as opposed to female mates. He has been observed enjoying these “allopreening” services from his excellently-named male subordinates Taz, Megatron, Joker, and Neo.
Bruce being Bruce. Image: Alex Grabham
“This provides evidence of up-hierarchy allopreening: it was exclusive to the alpha and generally increased in frequency inversely to dominance, with the highest frequency of allopreening done by the lowest-ranking male,” the team said (Taz is bottom of the heap, in case you’re curious). “This is likely a key factor in why Bruce exhibits the lowest stress: allopreening is associated with reduced glucocorticoids.”

Alpha males in other species normally have higher stress levels than their subordinates, but Bruce has found a way to kick back and chill out. Indeed, this isn’t the first time he’s been the subject of scientific fascination; a 2021 study reported Bruce’s use of pebbles as tools of self-care. The fact that he displays such immense behavioral flexibility and resilience “brings into question whether well-intentioned prosthetic assistance for physically impaired animals will always improve positive animal welfare,” according to the study.

“The bird missing his upper beak has rewritten what disability means for behaviourally complex species,” the team concluded.

In other news…

Who left all these fingerprints in the extratropical zone?

Blackport, Russell, and Sigmond, Michael. The Emergence of a Human Fingerprint in the Boreal Winter Extratropical Zonal Mean Circulation.” Geophysical Research Letters.

Everyone wants to change the world, and well, we did it folks. Scientists have discovered “a human fingerprint” in the atmospheric circulation of the Northern hemisphere during winter, according to a new study.

In other words, the impact of human-driven climate change is measurably causing the structure of Northern jet streams to shift over time, a trend that can be observed across multiple different datasets, and which may be a blind spot in our current climate models.

“We find that the pattern or ‘fingerprint’ of wind changes caused by increased greenhouse gases predicted by the models matches with observed changes and that random variability cannot explain the changes,” said authors Russell Blackport and Michael Sigmond of the Canadian Centre for Climate Modelling and Analysis.

“If the models are underestimating the human-caused response, we expect the circulation trends to continue at a faster rate than models predict,” the team added. “Understanding the cause of these discrepancies will be crucial for obtaining accurate projections of regional climate change.”

While this is not your typical biometric data, we are still leaving figurative prints in the skies. The good news is that at least there are experts and instruments monitoring these shifts—for now.

Release the Cretaceous krakens

Ikegami, Shin and Iba, Yasuhiro et al. “Earliest octopuses were giant top predators in Cretaceous oceans.” Science.

April has been a very octopusian month, featuring new discoveries about octopus sex and octopus imposters. How fitting to round it out with an amazing tale of real-life “krakens”—octopuses that may have exceeded 60-feet in length (!)—that once prowled the Cretaceous seas as apex predators.

“With a calculated total length of ~7 to 19 meters, these octopuses may represent the largest invertebrates thus described, rivaling contemporaneous giant marine reptiles,” said researchers co-led by Shin Ikegami and Yasuhiro Iba of Hokkaido University. “Their position in the food chain, however, has remained completely unknown since direct evidence such as the stomach contents of these giants has not been found to date.”
Concept art of Cretaceous kraken Nanaimoteuthis haggarti. Image: Yohei Utsuki: Department of Earth and Planetary Sciences, Hokkaido University
In the absence of any preserved octopus guts, the team looked at wear-and-tear on jaw fossils of these extinct giants for insights about their diet. The results revealed ample evidence of “a powerful bite” and “dynamic crushing of hard skeletons.” In other words, these krakens may not have only rivaled iconic ocean predators of this age—such as sharks or giant mosasaurs—they may have devoured them as well.

These ancient giants “probably consumed large prey with their long arms and jaws, playing the role of top predators in Cretaceous marine ecosystems,” the team concluded.

I think I have a new idea for a cryptid, in case anyone wants to spin up some lore.

Solved! The case of the Golden Orb

Auscavitc, Steven et al. “The Curious Case of the Golden Orb — Relict of Relicanthus daphneae (Cnidaria, Anthozoa, Hexacorallia), a deep sea anemone.” bioRxiv.

While there are no longer giant krakens prowling the seas (that we know of), the modern ocean is still home to plenty of bizarre creatures. Case in point: The Golden Orb, a strange object of indeterminate origin first glimpsed in 2023 by a robotic submersible more than two miles under Alaskan waters as part of a NOAA expedition with the ship Okeanos Explorer.

This orb completely baffled the scientific community. Was it an egg mass? A dead sponge? A biofilm? Theories abounded. But now, scientists think they have finally solved the riddle after a thorough lab analysis, according to a new preprint study that has not yet been peer-reviewed.

The verdict is that the orb is a clump of dead cells from the deep-sea anemone Relicanthus daphneae—put another way, these are basically gilded toe-nails.
youtube.com/embed/FUXrvirtdB8?…
“During the course of Okeanos Explorer expeditions, it is not uncommon that encountered organisms are not immediately recognized,” said researchers led by Steven Auscavitch of Smithsonian Institution's National Museum of Natural History. ”However, sometimes real mysteries exist and imagery alone only raises questions. Such is the case of the Golden Orb.”

“Fortunately, the specimen was collected using a suction sampler…and we have determined that the Golden Orb is the organic remnant of Relicanthus daphneae,” the team concluded.

Like the old saying goes, one anemone’s trash is a laboratory’s treasure.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

^{Hachette Book Group}

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2026-04-18 13:00:34

Babies Born from Dead Parents Will Increase with New Tech. Are We Ready?

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Welcome back to the Abstract! These are the studies this week that peacefully passed the crown, predicted trouble on the horizon, gave life after death, and coastally shelved an idea.

First, scientists watch a succession story play out for years in a naked mole rat colony. Then: prediction markets as a public health threat, the thorny questions of posthumous reproduction, and a walk on the shores of an ancient alien seas.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens or subscribe to my personal newsletter the BeX Files.

Digging into the palace intrigue of a rodent realm

Abeywardena, Shanes C., M. Schraibman, Alexandria et al. “Peaceful queen succession in the naked mole rat.” Science Advances.

Murderous queens. Bloody power struggles. Strictly enforced hierarchies. I’m speaking, of course, of naked mole rats, a bizarre species of rodent that becomes embroiled in violent conflicts over the succession of one breeding queen to the next.

Though aggression in succession is the norm for these animals, scientists now report a rare peaceful transition of power from one queen to her daughter in a captive colony.

The discovery suggests that “the less common peaceful trajectory to queen succession…is possible under some conditions” especially when “aggression-based enforcement may be insufficient or unnecessary and when the cost of a ‘war’ may be too high,” according to the new study.

As we’ve covered before on the Abstract, mole rats (both the naked kind and the non-naked kind) are the only mammals to live in eusocial colonies similar to bees or ants, meaning they are reigned over by one breeding queen and her subordinate workers. In addition to this unique social structure, mole rats display a number of fascinating behavioral and genetic adaptations, including long lifespans and low rates of cancer, which has made them a popular species for research.

Naked mole rats may not look all that intimidating, but when it’s time to anoint a new queen, the fur starts to fly (or it would, if these animals had any fur). If a queen dies or is deposed by rivals, subordinate females in the colony battle to take the throne.

But scientists co-led by Shanes Abeywardena and Alexandria M. Schraibman of the Salk Institute for Biological Studies observed a different succession story that unfolded over many years in the Amigos captive colony housed in San Diego.

Starting in 2019, a queen named Teré reigned over the colony and produced many healthy pups. Once the colony became crowded, with nearly 40 members, Queen Teré began delivering litters with no surviving pups. When the researchers removed half of the members, she began to produce surviving pups again, though not many. The team then deliberately introduced another stressor by moving the colony to a new facility in 2022, which ceased Queen Teré’s fertility.
Summary of the Amigos colony’s succession story. Image: Abeywardena, Shanes C., M. Schraibman, Alexandria et al.
In response, Alexandria, one of Teré’s daughters, became pregnant in 2023 and 2024, but her litters also produced no survivors, and she had to be euthanized in 2024 due to a uterine torsion. Finally, the long reproductive hiatus was ended after three years by the ascension of Alexandria’s sister, Arwen, who became Queen Arwen upon her delivery of healthy pups in October 2025.

“Aside from a single incident on 6 February 2025 in which one animal was found with a superficial bite wound and dried blood around the face, an injury that resolved without recurrence, no aggression or dominance related conflict was observed,” the researchers said. “Instead, Queen Teré was reported to exhibit ‘guarding’ behavior of Arwen and her litter. No other signs of social instability, behavioral escalation, or colony-wide distress were documented.”

“Together, these observations indicate that following the decline of Queen Teré’s reproductive capacity and the loss of the intermediary breeder Alexandria, Arwen successfully assumed the reproductive role without eliciting aggression from the reigning queen or from other colony members,” the team concluded.

The study is an antidote to the story we covered last week about a lethal chimp “civil war,” demonstrating that animals with strict dominance structures choose peace over violence in some cases. My only note is that Teré’ be given the honorific Queen Mother for her service.

In other news…

The over/under on predication markets

Packin, Nizan Geslevich and Rabinovitz, Sharon. “Prediction markets as a public health threat.” Science.

Prediction markets (PMs) are exploding in popularity, but researchers warn that the “addictive design, vulnerable users, and permissive regulatory environments” that characterize these markets “are a well-established formula for population-level harm,” according to the Policy Forum section of the journal Science.

PMs operated by companies like Kalshi or Polymarket “pose underappreciated threats to democratic integrity” and are linked to “addictive behaviors,” according to authors Nizan Geslevich Packin of Baruch College Zicklin School of Business and Sharon Rabinovitz of the University of Haifa. For instance, PMs can enable insider trading about classified government information and expose millions of users to the risk of addiction and major financial losses.

“A public health approach reframes PM risks as predictable outcomes of environmental design, analogous to tobacco control’s success in treating smoking as population-level exposure rather than individual vice,” the team argued in the article.

“The window for precautionary action is closing,” the researchers emphasized. “Each week of billion-dollar PM activity…prolongs a large uncontrolled experiment on users.”

It remains to be seen whether this warning about the dangers of a wild new industry will materialize into meaningful regulatory action. Want to make a bet?

Creating new life after death

Bamford, Sandra Carol. “Spectral Connections: Anthropological Engagements with Posthumous Reproduction.” Cambridge Archaeological Journal.

Posthumous children—children born after the death of one or both parents—are popular in myth and fiction, from the Greek Dionysus to more modern characters like John Connor or Daenerys Targaryen.

But this is also a real demographic of people that may evolve in interesting ways as reproductive technologies enable larger numbers of posthumous conceptions—in which the sperm and egg donors for an embryo may be deceased, such as the case of a boy born in 2018 whose mother and father had both died years earlier in a car crash.

In this way, “frozen sperm, eggs (or embryos) are, at one and the same time, both alive and dead,” said Sandra Bamford of the University of Toronto in a new anthropological study of the topic. “Through their frozen gametes and the potential of new kin connections in the future, the dead remain as active participants influencing the lives of the living.”

The study, which is part of a broader journal issue exploring kinship, pulls together many intriguing case studies, including the “Nuer ghost marriage” practices of Sudan, in which a deceased man can be considered the father of a kinsman’s children, or the case of William Kane, who bequeathed frozen sperm to his girlfriend, sparking a legal battle with his adult children after his death by suicide.

In other words, the legal, ethical, and practical implications of posthumous conception are still very much in flux, raising thorny questions about when, and how, the dead can produce new life. For instance: the ambiguities over judging the consent of a deceased person over the use of their posthumous gametes; the rights of posthumously conceived children to be named heirs of estates; and the possible emotional and psychological toll on posthumously conceived children, along with their family members.

The Rime of the Really Ancient Mariner

Zaki, Abdallah S. and Lamb, Michael P. “Identifying the topographic signature of early Martian oceans.” Nature.

We’ll close, as all things should, with waves lapping on long-lost alien shores. The surface of Mars is etched with the memory of rivers, lakes, and perhaps even an expansive ocean that may have covered much of its northern hemisphere between three and four billion years ago.

Scientists have already mapped out the rough contours of what may be an ancient Martian shoreline, but a new study throws the seas into sharper relief by identifying topographic signs of a possible coastal shelf. The team argued in their study that these shelf features may be a better indicator of a past ocean than shoreline features, based on similar observations on Earth.
An illustration taken from orbiter data identifying the coastal shelf region on Mars. Image: A. Zaki
“Our results indicate that long-lived ancient oceans on presently arid planets may be best identified not only through discrete shorelines but also through…a global coastal shelf,” said researchers led by Abdallah Zaki and Michael Lamb of Caltech University. The study supports “the presence of an ancient ocean on the northern plains of Mars that was bounded by a coastal shelf.”

While this ocean dried up long ago, its topographic remnants are a reminder of a time when Mars was warm, wet, and perhaps, wriggling with life.

Thanks for reading! See you next week.

Chinese baby born four years after parents' death

A surrogate mother gave birth as the biological parents had frozen embryos before they died in a car crash.

^{BBC News}

404 Media

2026-04-17 13:00:36

The Destroyed Remnants of a Lost World Are Falling to Earth, Scientists Discover

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The remnants of a bizarre long-lost world that fell apart before our planet was fully formed are falling to Earth in the form of meteorites, according to a new study in Earth and Planetary Science Letters.

For decades, scientists have puzzled over the origin of angrites, a rare class of about 70 meteorites with unique volcanic compositions that suggest they were forged in a large ancient object with differentiated layers, including a metallic core and a magma ocean.

Scientists have long assumed that this object, the so-called angrite parent body (APB), was roughly a few hundred miles across, similar in size to the asteroid 4 Vesta. But researchers recently raised the tantalizing possibility that the APB might have been much larger, perhaps on the scale of Earth’s moon.

Now, a team led by Aaron Bell, an experimental petrologist and an assistant research professor at the University of Colorado, Boulder, has discovered “the first unequivocal evidence supporting the large angrite parent body hypothesis, which posits that the angrites are samples derived from a protoplanet that was catastrophically disrupted during the earliest evolutionary stages of the inner solar system,” according to the new study.

“It probably got destroyed in the early solar system, so [angrites] are remnants of a lost protoplanet,” Bell said in a call with 404 Media. “A few pieces broke off and are now in the asteroid belt, and a few of them have come to Earth, and we’ve picked them up.”

Angrites date back about 4.56 billion years, making them among the oldest known volcanic rocks. They belong to a class of stony “achondritic” meteorites that contain the crystalized signatures of melted rock, such as basalts, hinting that they originate in larger bodies that underwent some degree of planetary processing and layered differentiation, even if those early planetary embryos never accreted into full planets.

“Angrites are interesting in that they don't have a known parent body,” Bell said. “It's never been definitively identified, and that's one of the mysteries.”

“There are a bunch of arguments about why angrites are so geochemically unusual,” he added. “They're kind of this oddity.”

Most models of early planetary accretion predict that relatively small objects formed within the first few million years of the solar system, which is why the APB was assumed to be an asteroid-sized object, rather than a much larger nascent planet.

While working on a previous study, Bell became interested in an aluminum-rich angrite from Northwest Africa, known as NWA 12,774, which was classified in 2019. The meteorite is one of a handful of unusual primitive angrites that appear to have been crystallized at high pressure within the APB, indicating that it formed deep under the surface and therefore might shed light on the size of this bygone world.

“Even among angrites, there's only four or five that have these primitive compositions,” Bell said, adding that the meteorite had “off-the-charts aluminum content, which is really very unusual.”

Bell and his colleagues developed a geobarometer—a tool that calculates the pressures at which rocks and minerals formed—-that estimated it would take at least 1.7 gigapascals to account for the rock’s special properties. This pressure corresponds to an object with a minimum radius of 620 miles (1,000 kilometers), which is just under the size of Pluto. The APB may even have been as large as the Moon, which has a roughly 1000-mile radius.

“Clearly, within the first few million years of solar system evolution, you could grow planetary embryos that were 1,000-plus kilometers” in radius, Bell said. “We're talking within three million years of the condensation of the first solids in the solar system, so it’s right at the beginning.”

The discovery suggests that the APB may have been a first-generation protoplanet that coalesced and shattered millions of years before the familiar worlds of our solar system took full shape. Judging by the strange properties of angrites, the APB was also on track to be a very different kind of world than Earth and its neighbors, had it survived the chaotic environment of its infancy.

Angrites are “geochemically fundamentally different, and that's why people were interested in the first place—because they were odd,” Bell said. “They don't look like garden-variety

basalts you get from Mars or the Moon or Earth.”

“It's sort of this path not taken—or maybe it was, but we just have a couple pieces of it that tell us something we didn't know,” he concluded. “There were once large bodies that, maybe, didn’t look like the terrestrial planets.”

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2026-04-11 13:00:06

The Oldest Octopus Fossil Ever Isn’t An Octopus At All, Scientists Discover

Welcome back to the Abstract! Here are the studies this week that were ritually sacrificed, kicked out of the galaxy, taxonomically revised, and wore many hats.

First, scientists shed light on human sacrifice and cousin sex using ancient DNA from the bones of people who lived in fifth-century Korea. Then: the yeeting of a star, an octopus imposter, and the indignities of a bare head.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliensor subscribe to my personal newsletter the BeX Files.

All in the Family (this time with human sacrifice)

Moon, Hyoungmin, and Kim, Daewook et al. “Ancient genomes reveal an extensive kinship network and endogamy in a Three-Kingdoms period society in Korea.” Science Advances.

Ready or not, it’s time to visit an ancient burial ground packed with the bones of sacrificed families. Welcome to the Imdang-Joyeong site in Korea, which contains a cluster of 1,500-year-old tombs from the tumultuous Three Kingdoms period.

As the name suggests, this era was dominated by a trio of warring dynastic factions called the Goguryeo, Baekjae, and Silla. Historical and archaeological evidence suggests that the Silla kingdom followed unique customs, including the practice of “Sunjang,” a coburial of sacrificed people with an elite grave owner, as well as consanguineous marriages—marriages between close blood relatives.

Now, researchers have now sequenced ancient DNA from 78 deceased individuals to corroborate the findings with confirmed lineages. The results revealed that consanguineous marriages were indeed common, and that adult women were often buried together with their own kin, which is a rarity in ancient graveyards around the world.
The three main geographical locations of the tombs consisting of the Imdang-Joyeong burial complex with separate zoom-in panels (i to iii). The green gradient represents elevation, and the green circles represent the position of dirt mounds of the tombs. Image: Moon, Hyoungmin, and Kim, Daewook et al.
“Silla is thought to have practiced different marital customs from that of its neighbors, such as Goguryeo,” said researchers co-led by Hyoungmin Moon of Seoul National University and Daewook Kim of Yeungnam University. “Most notably, Silla royal elites are documented to have practiced consanguineous marriage, which is rarely observed in Goguryeo and Baekjae records. Historical accounts of consanguineous marriage are thought to be related to the consolidation of the rank and social status within Silla royals and local elites.”

“However, because of limited ancient genome studies in Korea, no corroborating genomic evidence so far has been reported regarding the marriage customs of the Three-Kingdoms period Koreans,” the team added. “Our research is the first to analyze the genome-wide composition of closely related individuals from an ancient Three-Kingdoms period of Korea.”
From left to right, a Baekje, Goguryeo, and Silla envoy depicted in a 6th-century painting.
Many tombs at this site include separate chambers for elite grave owners, and for sacrificed people, which often included entire families that may have been ritually sacrificed and buried alongside their masters. Both elites and sacrificed individuals were often born from unions between first or second cousins, suggesting that consanguineous marriages were common across class lines.

“We found decisive evidence of three cases of families in which parents and their offspring were sacrificed together in the same grave,” the team said. “Our genetic findings are the first to confirm the acts of Sunjang of an entire household and suggest that these practices might be common for sacrificial burials of the Three-Kingdoms period.”

In addition, some adult women were buried alongside their parents and grandparents, a pattern that is rare in most other ancient burial grounds in which women tend to be buried alongside their husbands and in-laws. The study offers a rare glimpse of a society with idiosyncratic customs that is ready-made to be the setting of a new HBO prestige series.

In other news…

♩ It’s a shooting star leaping through the sky ♩

Bhat, Aakash et al. “Discovery of a runaway star likely ejected by a Type Iax supernova.” Astronomy & Astrophysics.

Some space explosions go so hard that they can kick a star right out of a galaxy. Scientists report the serendipitous discovery of one of these so-called “runaway stars” that was likely ejected from the galaxy approximately 2.8 million years ago “with an ejection velocity exceeding 600 kilometers per second”—or about 1.3 million miles per hour—according to a new study.

This cosmic sprinter is a white dwarf, the collapsed remains of a star, that was accelerated to ludicrous speed by a “Type Iax” supernovae, a type of stellar kablooey that occurs in some binary star systems.

This runaway star “is notably hotter than previously studied members of this class,” said researchers led by Aakash Bhat of the University of Potsdam. “Kinematic analysis indicates that the star has a high probability of being unbound from the Galaxy.”

So long, runaway star, and safe travels through intergalactic space.

A 300-million-year-old case of mistaken identity

Clements, Thomas et al. “Synchrotron data reveal nautiloid characters in Pohlsepia mazonensis, refuting a Palaeozoic origin for octobrachians.” Proceedings of the Royal Society B.

Prepare to be ink-pilled, because it turns out that the oldest known octopus fossil ever found—a 300-million-year old species called Pohlsepia mazonensis—is not an octopus at all. It is a member of the nautilus family that just ended up looking sort of like an octopus in part because its shell fell off during the decomposition process.
Concept art of dead Pohlsepia mazonensis with its shell off. Image: Dr Thomas Clements, University of Reading
“We present the first comprehensive reassessment of this enigmatic fossil, alongside multiple new specimens, using a suite of advanced analytical techniques,” said researchers led by Thomas Clements of the University of Reading. During this process, the team discovered a special “radula”—a feeding organ lined with rows of teeth—that matched the nautilus family.

As a result, P. mazonensis “represents the oldest known fossil soft tissue nautiloid (albeit without its shell),” the team concluded. The finding is a boon to octopus scientists (a.k.a. Doc Ocks) who have been perplexed for years by this specimen, given that the fossil record otherwise suggests that octopuses emerged much later in time, during the age of dinosaurs.

It just proves the old adage: Don’t believe everything you hear about the evolutionary origins of octopuses.

We’re all mad hatters here

Capp, Bernard. “The Cultural, Social, and Ideological Role of the Hat in Early Modern England.” The Historical Journal.

We’ll cap off with a hat tip to a study that chronicles hat etiquette across early modern England, roughly spanning the 1400s to 1700s.

Authored by the aptly-named Bernard Capp of the University of Warwick, the work is packed with madcap anecdotes about hats as signifiers of identity, instruments of shame, tools for salutations, and even makeshift toilets in the most ribald tales.

“The ‘Pleasant History’ of Hodge tells of a simpleton humiliated by a maidservant who claps on his head the hat in which she had just defecated,” Capp noted in the study. “Such behaviour, moreover, was not confined to fiction; in 1747 a Wiltshire man admitted snatching a rival’s hat, pissing in it, and clapping it back on the victim’s head.”
Roundhead and cavalier soldiers, wearing partisan hats, face each other and urge their dogs to attack each other. Image: John Taylor (attributed), A dialogue, or, Rather a parley betweene Prince Ruperts dogge whose name is Puddle, and Tobies dog whose name is Pepper (1643).
Other highlights include the Cap Act of 1571, which allowed offenders “to be prosecuted for wearing hats to church;” jokes about fine ladies wearing towering ribboned hats that spooked local livestock; and a man named Thomas Ellwood who was rendered unable to leave his house for months in 1659 because his father confiscated all his hats, because who would dare, in his words, to “run about the Country bare-headed, like a Mad-Man”?

Hats off to this heady historical work, and beware the bareheaded Mad-Men.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

^{Hachette Book Group}

404 Media

2026-04-09 18:00:46

World’s Largest Group of Chimps Waging Deadly ‘Civil War,’ Scientists Discover

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Scientists have observed an extremely rare chimpanzee “civil war,” a conflict that has killed at least seven adults and 17 infants, and which sheds new light on the nature of warfare in humans, according to a study published on Thursday in Science.

Male chimpanzees are often aggressive to outsiders, but it is unusual for chimps to kill former members of their own social groups. Though Jane Goodall and her colleagues observed one famous example—the Gombe Chimpanzee War of the 1970s, which resulted in seven adult deaths—it’s estimated that these violent episodes occur only once every 500 years, based on genetic analyses of chimpanzee lineages.

Now, a team led by Aaron Sandel, an associate professor of anthropology at the University of Texas at Austin, has reported a far more deadly “group fissure” among the Ngogo chimpanzees of Uganda. This population exceeded 200 individuals at one point, making it the largest group of chimpanzees ever observed in the wild. But over the past decade, the chimps have fractured into two factions, one of which has staged multiple lethal raids on the other.

“Certainly, these are not strangers,” said Sandel in a call with 404 Media. “These are chimps that once knew each other, and we know that for certain.”

The Ngogo group has been studied since the 1970s by primatologists like Thomas Struhsaker, and have been intensively observed since 1995 as part of the Ngogo Chimpanzee Project set up by David Watts and John Mitani. For more than three decades, researchers from around the world have convened to watch the group during summer field expeditions, while Ugandan research assistants have maintained a continuous presence at the site.

Because of this longstanding observation, Sandel said, researchers were able to be on the ground “witnessing every moment” as the deadly chimp war unfolded.

Chimpanzees from different clusters socialized together before the group fissure in 2015. Image: Aaron Sandel

This group has always had distinct subpopulations that spent more time together, including the Western and Central clusters. Even so, before the fissure, the clusters regularly overlapped for shared activities like grooming, patrolling, and interbreeding.

Sandel vividly remembers the exact day that this dynamic had noticeably shifted: June 24, 2015. He was following the Western cluster, which was at the center of its “neighborhood” territory, he said.

0:00
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Video credit: Aaron Sandel

“They hear chimps from the Central neighborhood nearby, and they go quiet,” he recalled. “They seem nervous. They're touching each other with this reassurance that they typically do when they hear the outsider chimps, but I was just alone with them. I remember, just in that moment, being really puzzled and focused, like ‘what’s going on?’”

“They could have reunited and done what's typical—screaming and charging around, maybe some slapping, and then come together, sit together, groom, maybe go their separate ways after, because they'd already started to be a bit more disconnected,” Sandel continued. “But instead of reuniting in typical chimpanzee fusion fashion, the Western chimpanzees ran and the Central chimps chased them.”

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Video credit: Aaron Sandel

What started as a weird vibe transformed into a weeks-long chill between the groups, followed by a temporary thaw. Ultimately, the tension spiraled into bloody conflicts.

“You act like a stranger, you become a stranger,” Sandel said. “It seemed like that planted the seed of polarization.”

Over the course of the next few years, the males in each cluster began to treat each other like outsiders. The last offspring that had parents from different clusters was conceived in March 2015. The Western and Central chimps were fully separated by 2018.

The Western chimps, despite being smaller in number, have since amped up hostilities by staging 24 violent attacks against their former kin, killing at least seven mature males and 17 infants from the Central cluster. The death toll may well be higher, but some deaths and disappearances cannot be conclusively attributed to the conflict.

Sandel and his colleagues proposed a few possible causes of this “civil war,” a term that specifically refers to human conflicts, but that may have parallels in other species. First, the unusually large size of the group may have amplified feeding competition among individuals, even in their lush forest habitat. Social networks within the group may have also been disrupted by a wave of six deaths in 2014—five adult males and one adult female—some of whom likely died from disease.

The beginning of the fissure also coincides with the rise of a new alpha male, Jackson, who replaced the previous alpha, Miles. Sandel recalled Miles grunting in submission to Jackson on the same day that the Western cluster ran away from the Central cluster. Such transitions between alphas can introduce social instabilities as the dominance hierarchy is upended, a process that can take several months.

Indeed, Miles reacted violently toward other members of the group in the wake of his displacement. Jackson, who led the Central cluster, ended up as one the casualties of the conflict; he died from injuries inflicted by the Western cluster in 2022.

Whatever the cause of the rupture, this group of former kin have now become hostile enemies. It’s always dicey to draw broad comparisons between the behavior of humans and other animals, but the team speculates in the study that one possible takeaway is that "it may be in the small, daily acts of reconciliation and reunion between individuals that we find opportunities for peace.”

“If we study chimpanzees in detail and start to understand the mechanisms driving their cooperation, their conflict, and something as complex as one group becoming polarized, splitting, and engaging in ongoing lethal conflict, then we might gain insights into similar dynamics that are happening in humans,” Sandel said.

“If chimps are able to do this complex process in the absence of ethnicity, language, and religion—the things we often attribute to human warfare—chimps don't have those narratives and those excuses,” he concluded. “They're stripped away of those cultural dimensions. It must be their interpersonal social bonds and daily conflicts, reconciliations, and avoidances—all those dynamics. If that's the case with chimps, to what extent is it the case in humans? It’s a hypothesis to be tested.”

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Gombe Chimpanzee War - Wikipedia

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404 Media

2026-04-04 13:00:42

Gambling Is Thousands of Years Older Than We Thought, Rewriting Human Evolution

Welcome back to the Abstract! Here are the studies this week that rolled with it, went out on a limb, gravitationally waved, and spotted relics in our midst.

First, hundreds of prehistoric dice sets shed light on the dawn of gambling. Then: these disembodied arms are horny, the forbidden fruits of supernovae, and baby food for the Milky Way.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens or subscribe to my personal newsletter the BeX Files.

Rolling the dice in the Ice Age

Madden, Robert J. “Probability in the Pleistocene: Origins and Antiquity of Native American Dice, Games of Chance, and Gambling.” American Antiquity.

Thousands of years before prediction markets, sports betting, and poker nights, Native Americans were playing the odds with dice and other games of chance.

An analysis of nearly 300 ancient artifacts related to gambling—especially two-sided dice known as “binary lots”—has revealed that Native Americans have played games of chance for at least 12,000 years, many millennia before any other known cultures in the world.

“Historians of mathematics frequently identify the invention of dice and games of chance as a crucial early step in humanity’s evolving discovery and understanding of randomness and the probabilistic nature of the universe,” said study author Robert Madden of Colorado State University.

“The findings presented here suggest that some of the earliest steps on this intellectual journey were taken not by complex societies in the Near East and Eastern Europe around 5,500 years ago but rather by Native American hunter-gatherers in western North America in the waning centuries of the Pleistocene, no later than 12,000 years ago,” he continued.
Examples of prehistoric Native American dice. Image: Courtesy of Robert Madden
Scholars have marveled at the prevalence of Native American games of chance for more than a century, but Madden is the first to systematically trace their origins. He set out to study prehistoric dice in museum collections at the Smithsonian Institution, the University of Wyoming Archaeological Repository, and the Denver Museum of Nature and Science, which were documented in a landmark compendium called Games of the North American Indians published in 1907 by the ethnographer Stewart Culin.

The most common dice games involved players taking turns throwing sets of binary lots, with a score that was assigned based on a count of the “up”-facing side thrown by each player on their turn. Cumulative scores were tracked with counting sticks; the first to reach a predesignated number were the winners.

Madden identified dice at 57 archaeological sites across 12 states, with the oldest appearing in the territories of western Great Plains cultures. The finds clearly indicate a complex understanding of probability, which played a role not only in social cohesion, but also in cosmologies.

“Numerous ethnographic accounts of Native American traditions depict dice playing as a sacred activity that was inherently pleasing to the gods and celestial powers (who were themselves dice players), with ceremonial and secular dice games being played at festivals and seasonal events,” Madden said.

The study chronicles many fascinating myths and legends about gods playing dice on the surface of Earth and the creation of humans as the outcome of a cosmic dice game. Albert Einstein famously remarked that god “does not throw dice” in response to the probabilistic realm of quantum physics. It would seem these prehistoric cultures were way ahead of the game on this point.

In other news…

Eight-armed and ready

Villar, Pablo S., Jiang, Hao et al. “A sensory system for mating in octopus.” Science.

Male octopuses are real suckers for sex, reports a new study about the “hectocotylus,” which is a special arm that serves a dual purpose as both sensory and mating organ.

During copulation, males use the hectocotylus to probe the female’s intricate oviducts in order to deposit sperm, but the mechanisms behind this strategy have been shrouded in tentacled mystery. To get a better handle on the process, scientists coated tubes with different substances and discovered that octopuses only released sperm when sucker cups on the hectocotylus made contact with progesterone, a female hormone produced in the ovaries.

“Whereas nonmating arms are used for chemotactile exploration and predation, the hectocotylus is almost exclusively used for mating and often even protected during hunting,” said researchers co-led by Pablo S. Villar of Harvard University and Hao Jiang of the University of California San Diego.

In a wild twist, the hectocotylus can even work its magic when it is entirely severed from the male’s body, allowing detached arms to autonomously inseminate females! It’s proof that romance is not dead, it’s just occasionally dismembered.

Mind the black hole gap

Tong, Hui et al. “Evidence of the pair-instability gap from black-hole masses.” Nature.

You’ve heard of forbidden planets, but what about forbidden black holes? For years, scientists have theorized that black holes with masses between approximately 50 and 130 times the mass of the Sun fall into a “forbidden range” that cannot exist.

The reason is that colossal stars that are 100 to 260 times more massive than the Sun experience a special kind of stellar death known as “pair‑instability supernovae” in which they completely self-destruct, preventing the formation of black holes. Stars that are both bigger and smaller than this range, in contrast, explode in supernovae that do collapse into black holes.

Now, scientists have discovered evidence for this gap using dozens of gravitational waves, which are ripples in spacetime formed by cataclysmic events such as mergers of black holes. In binary black holes—systems where two of these massive objects orbit each other—the smaller objects never fell into this range. Some of the larger black holes had forbidden masses, but that’s likely because they had merged with other black holes in the past, not because they were initially at that mass after the deaths of their progenitor stars.

“We interpret these findings as evidence for a subpopulation of hierarchical mergers: binaries in which the primary component is the product of a previous black-hole merger and thus populates the gap,” said researchers led by Hui Tong of Monash University. “As the number of detections increases, it will be possible to gain new insights into the pair-instability gap.”

From my perspective, all black holes are forbidden, because they are terrifying cosmic death traps. But it’s nice to know that the universe has limits, too.

I’m so hungry, I could eat a galaxy

Sestito, Federico et al. “An ancient system hidden in the Galactic plane?” Monthly Notices of the Royal Astronomical Society.

Last, it’s time to pay respect to our stellar elders. A new study reveals that a weird population of 20 stars orbiting within a few thousand light years of the Sun have basically no metals, the astronomical term for elements that are heavier than hydrogen and helium. Since new generations of stars become more enriched with metals over time, these stars must be extremely ancient relics. So where did they come from?

Scientists think they have the answer: These metal-light Methusalehs are the last remnants of an ancient dwarf galaxy, which the team dubs “Loki.” Despite its powerful Norse namesake, Loki appears to have been swallowed by the Milky Way early on in our galaxy’s 13-billion-year history. While it is common to find very metal-poor (VMP) stars orbiting all around our galaxy’s core, it’s much rarer to find them all the way out here in the galactic exurbs, hidden in the “plane” (the flattened disk of a galaxy).

“This work provides, for the very first time, a dedicated detailed chemical abundance analysis of a sample of VMP stars with orbits close to the Milky Way plane,” said researchers led by Federico Sestito of the University of Hertfordshire. “A plausible scenario, supported by cosmological zoom-in simulations, is the early accretion of a single system.”

It goes without saying that eating a whole galaxy is pretty metal, even if the stars within it are not.

Thanks for reading! See you next week.

First Contact

A narrative and visual exploration of humanity’s age-old search for and fixation with extraterrestrials.First Contact explores the ancient idea—and epic ...

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2026-03-21 13:00:07

Scientists Narrow Down the Hunt for Aliens to 45 Planets

Welcome back to the Abstract! Here are the studies this week that visited strange new worlds, broke the adorability scale, pigged out, and took in an alien light show.

First, scientists sift through thousands of planets to find the best possible sites for life. Then: meet a Cretaceous cutie, check out some python blood, and travel to the biggest moon in the solar system.

As always, for more of my work, check out my book First Contact: The Story of Our Obsession with Aliens or subscribe to my personal newsletter the BeX Files.

The best of all possible worlds

Bohl, Abigail et al. “Probing the limits of habitability: a catalogue of rocky exoplanets in the habitable zone.” Monthly Notices of the Royal Astronomical Society.

Scientists have discovered more than 6,000 exoplanets, which are planets that orbit other stars, but most of these worlds are hopelessly inhospitable to life. To home in on the best candidates for habitability, a team combed through the catalogue of exoplanets to identify the best potential alien homes.

The short-list includes 45 rocky worlds that are no bigger than twice the size of Earth and orbit within the habitable zone (HZ) of their stars, which is the region where liquid water might exist on the surface. The most exciting destinations include four planets that orbit the red dwarf star TRAPPIST-1, about 40 light years away, or Proxima Centauri b, which is the closest known exoplanet, located just four light years from Earth.

“To assess the limits of surface habitability, it is critical to characterize rocky exoplanets in the HZ,” said researchers led by Abigail Bohl of Cornell University. “Observations of known rocky exoplanets on the edges of the HZ can now empirically explore these boundaries.”

“The resulting list of rocky exoplanet targets in the HZ will allow observers to shape and optimize search strategies with space- and ground-based telescopes… and design new observing strategies and instruments to explore these worlds, addressing the question of the limits of exoplanet surface habitability,” the team added.
A diagram depicting habitable zone boundaries across star type with rocky exoplanets.
While previous studies have compiled similar lists, this work includes updated observations and also organizes the planets according to key properties such as age, orbital characteristics, radiation exposure, and ease of observation from Earth. In this way, the researchers pave the way toward testing individual factors that influence habitability, such as whether older planets seem to be more hospitable to life.

It could also be useful to compare planets that orbit at the edges of the habitable zone to planets right smack dab in the middle. After all, in our own solar system, Venus and Mars are at the inner and outer edges of the solar system, while Earth is vibing right in the Goldilocks zone.

It may be that planets in other star systems are similarly limited in their habitability as they approach the edge of the zone—or maybe not! We won’t know until we look. And now, we know where to start. To the observatory!

In other news…

Forever young at 100 million years old

Jung, Jongyun et al. “A new dinosaur species from Korea and its implications for early-diverging neornithischian diversity.” Fossil Record.

It is my great pleasure to inform you that an incredibly cute baby dinosaur has been discovered in South Korea, where dinosaur fossils are very rare. Meet Doolysaurus, named for the popular Korean cartoon character Dooly the Little Dinosaur. This little infant lived in the mid-Cretaceous period, about 100 million years ago, and represents a new species of thescelosaurid, a type of bipedal dinosaur.
The skeletal anatomy of a juvenile Doolysaurus huhmini. The graphic highlights the fossil bones that were found with the dinosaur. Image: Janet Cañamar, adapted from Jung et al 2026.
“Here, we describe a small, well-preserved skeleton…recognized as the holotype of a new genus and species, Doolysaurus huhmini” which includes “the first diagnostic cranial material of a dinosaur from Korea,” said researchers led by Jongyun Jung of the University of Texas at Austin. “It contributes novel insights into the diversity of the Korean dinosaur fauna, which has previously been known primarily from ichnofossil and egg fossil records.”
An artist’s interpretation of a juvenile Doolysaurus huhmini. Image: Jun Seong Yi
To top it off, this dinosaur might have sported a fuzzy coat. Jurassic Park has primed me not to trust any tech billionaire that wants to resurrect dinosaurs for public spectacle, but I’ll make an exception for Doolysaurus.

The right stuff for being stuffed

Xiao, S., Wang, M., Martin, T.G. et al. “Python metabolomics uncovers a conserved postprandial metabolite and gut–brain feeding pathway.” Nature Metabolism.

At dinnertime, pythons go whole hog—often literally. These huge snakes can devour their own body weight in a single meal, allowing them to fast for more than a year between feedings. In a new study, scientists probe these extreme eaters by analyzing the blood of Burmese pythons during their “postprandial” (after-gulp) phase.

“Burmese pythons display a remarkable array of postprandial responses, including more than 40-fold increase in energy expenditure, sustained tissue protein synthesis and more than 50 percent increase in the size of most organs,” said researchers co-led by Shuke Xiao of Stanford University, Mengjie Wang of the University of South Florida, and Thomas G. Martin of the University of Colorado, Boulder.
A Burmese python held by an author of the study. Image: Patrick Campbell/CU Boulder
In other words, the snakes “undergo extensive gastrointestinal remodelling” that truly put humanity’s best competitive eaters to shame. Joey Chestnut would have to simultaneously swallow over 2,000 hot dogs to even rival their sublime engorgement, just in case you are interested in some mustard-smeared napkin math (his world record is a measly 83).

Ganymede gets a glow-up

Cao, Xin et al. “Auroral Emissions on Ganymede: New Constraints on Their Electron Energy Dependence.” Geophysical Research Letters.

We’ll close, as all things should, with an extraterrestrial aurora. This week, let’s gaze into the glowing skies of Jupiter’s moon Ganymede, the largest moon in the solar system and the only one endowed with its very own magnetic field.

Now, scientists discovered that “Ganymede's auroras are brighter than previously thought,” according to a study based on new atmospheric measurements and laboratory data.

Ganymede “mini-magnetosphere [is] embedded within Jupiter's powerful magnetospheric environment,” said researchers led by Xin Cao of the Dublin Institute for Advanced Studies. “This unique configuration allows for auroral processes similar in morphology to those observed on magnetized planets, but driven by different external and internal conditions.”

The research illuminates the complex magnetic interactions between Ganymede and Jupiter, which will be studied more in depth by future missions, such as the European Jupiter Icy Moons Explorer (Juice) that is currently on its way to the gas giant, aiming for a 2031 arrival. I hope this news of cosmic radiance adds some sparkle to your weekend.

Thanks for reading! See you next week.

Python metabolomics uncovers a conserved postprandial metabolite and gut–brain feeding pathway - Nature Metabolism

Leveraging pythons as an extreme model of feeding and fasting behaviour, this study uncovers para-tyramine-O-sulphate as a conserved postprandial metabolite that links nutrient intake to energy balance by activating hypothalamic neurons and suppressi…

^Nature