Welcome back to the Abstract! Here are the studies this week that boiled my blood, warmed my heart, and got permanently inked into my memory.

First, a new look at some very old tattoos. Then: a posthumous discovery from a beloved defunct telescope, an update on lava planets, the adventures of translocated mole rats, and some provocative style tips from chimpanzees.

Ink of ages

Caspari, Gino et al. “High-resolution near-infrared data reveal Pazyryk tattooing methods.” Antiquity.

Some 2,300 years ago, a woman from the nomadic Pazyryk culture of Siberia was inked with elaborate tattoos, including dynamic animal fights. Her body and its mesmerizing displays have survived to this day, along with many other “Pazyryk ice mummies” that were immaculately preserved in permafrost tombs.

Now, scientists have imaged the woman’s epic epidermis with high-resolution techniques that expose hidden details of her tattoos, yielding new insights about the artists and tools that made them.

“While the images on the hands are mostly simple designs, the most elaborate of which is a rooster on the left thumb, the forearms display some of the most complex Pazyryk tattoos currently identified,”  said researchers led by Gino Caspari of the Max Planck Institute of Geoanthropology. 

Photogrammetrically created 3D model of the mummy, showing: A) texture derived from visible-spectrum photographs; and B) texture derived from near-infrared photography. Credit: M. Vavulin

The results revealed that the middle-aged woman was tattooed with at least two different instruments: a multipoint tool that provided a uniform line thickness, as well as a finer tool with a single point. The pigment was probably crafted from soot or burnt plants, but the nature of the “needles” remains unclear (they may have been plant thorns, for instance). The new images exposed the superior quality in the scene on her right forearm compared to the left, which suggests that at least two artists worked on the decorations over multiple sessions.

“The right-forearm tattoo likely required at least two sessions to complete, beginning with the ungulate [stag] positioned at the wrist,” the researchers said. “This clever placement utilizes the contours of the wrist to enhance the ungulate’s form, allowing the tattoo to flow across the arm.”

“The right-forearm tattoo also features techniques that are challenging from the tattooist’s perspective” yet “the linework is clear and consistent, with nearly double the amount of outlining present on the left forearm,” they added. “Taken as a whole, this evidence suggests that the left forearm tattoo was created by an artist with less experience or skill.”

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A figure depicting the tattoos and placement on the body. Image: Svetlana Pankova

Tattoos represent a diversity of meanings and practices across regions and time, and it’s important not to color bodies of the past with our present biases. While we may never know exactly what these dramatic scenes meant to the Pazyryk culture, it is amazing that we can behold them in such fantastic detail thousands of years after this woman, and her tattooists, lived and died in the Altai Mountains.  

“Modifications to soft tissue, including tattooing, present a temporal paradox as they are simultaneously permanent over the lifetime of the marked individual, yet transitory from an archaeological perspective,” said Caspari and his colleagues. “The interpretation of tattoos in prehistoric contexts necessarily remains speculative and may never reach the intricate richness of meaning with which the images and practices were originally associated.”

If this story piques your interest in the ancient artistry of Altai Mountain cultures (understandable!), check another recent study about the stylistic shifts in the region’s rock art depictions of elk over thousands of years.  

In other news…

Tidal wave over Arecibo

Gong, Yun et al. “First Observation of a Strong Thermospheric 4.8-Hour Tide and Its Impact on the Ionosphere Over Arecibo.” Geophysical Research Letters.

Tidal waves are normally thought of as massive walls of ocean water, but the sky is also rippled by tides of solar energy generated by the Sun’s activity. This week, a team discovered a “strong and unusual” tidal wave that reverberated about 160 to 300 miles above Puerto Rico’s Arecibo telescope on the night of March 17, 2015. 

“We found that this tide is surprisingly powerful, with wind speeds around 25 m/s—larger than those seen in more common tidal patterns,” said researchers led by Yun Gong of Wuhan University. “This is the first time such a strong 4.8-hour tide has been reported at these heights.”

The team noted that the wave was probably amplified by a geomagnetic storm, though the finer details of such complex interactions are still up in the air. The study is a testament to the ongoing afterlife of Arecibo, which sadly collapsed in 2020, but remains a legendary icon in part because of its extensive archives that date back to 1963.  

The floor is lava

Boukaré, Charles-Édouard et al. “The role of interior dynamics and differentiation on the surface and in the atmosphere of lava planets.” Nature Astronomy.

Just in case you haven’t expressed gratitude to Earth lately, here’s a study about “lava planets,” which are rocky worlds that orbit so close to their stars that their day-sides reach 5,000°F.  

“Unlike rocky planets in the solar system, lava planets maintain a long-lived, shallow magma ocean on their day-side, even after billions of years of interior cooling,” said researchers led by Charles-Édouard Boukaré of York University. “Such asymmetric magma oceans have no analogues in the solar system and their internal dynamics and evolution are still poorly understood.” 

Fortunately, lava planets are a current priority for observation by the James Webb Space Telescope, so we may learn more about them soon. Even as we ride out more intense heat waves on Earth, pour a cold one out for these tortured worlds.

Moving day for mole rats

Moldován, Orsolya et al. “Challenges and opportunities in the translocation of grassland-dwelling subterranean mammals: The case of blind mole rats.” Global Ecology and Conservation.

Burrowing animals are disproportionately threatened by the steady march of human land developments (citation: Watership Down). European blind mole rats, for instance, “have long been persecuted, and many species are threatened by extinction as they only exist in a few small and isolated populations,” according to a new study.

Though maligned in the past, these unique rodents are increasingly recognized as beneficial ecosystem engineers—plus, they are textbook “ugly-cute,” an aesthetic I cherish. To that end, the study followed up on translocation efforts that moved vulnerable colonies to new and safer sites. 

“In the seven projects, a total of 141 blind mole rat individuals were translocated, of which 56 were males and 85 were females,” said researchers led by Orsolya Moldován of the University of Debrecen in Hungary. These “recent conservation efforts… were mostly successful and reversed the 200-year trend of decline. The method is thus promising for saving blind mole rats from extinction and for ensuring their long-term survival.” 

It’s uplifting to know that there’s still a light at the end of the tunnel for these burrowing beauties. 

The hottest summer look: Butt-grass

Van Leeuwen,  Edwin J.C. et al. “Chimpanzees socially learn non-instrumental behaviour from conspecifics.” Behavior.

We’ll close with a recent study that I first saw reported by Sabrina Imbler of Defector about chimps that put grass in their buttholes as a style choice. I suggest you read their article through to the final reveal, which is surprisingly heart-warming for a tale of bum-grass. But for our purposes, here's the upshot: 

After witnessing chimps at Zambia’s Chimfunshi sanctuary adorning their ears with grass, a team “observed the birth of a related variant in which chimpanzees started to wear the grass from their rectums,” a trend that spread “to most of the group within six weeks,” according to researchers led by Edwin J.C. van Leeuwen of Utrecht University in the Netherlands. 

“Though we primarily observed grass-in-rectum behavior by the same individual (the plausible innovator), the behavior was adopted by at least five other individuals from the same group, of whom two are still performing it to this day, almost a year after initial observations,” the team said.

It’s another reminder to be the plausible innovator you want to see in the world. You never know what hare-brained scheme (or grass-butted one) might catch on.

Thanks for reading! See you next week.

The Sun powers almost all life on Earth, but chemosynthetic life is the fascinating exception. These organisms find fuel in chemical reactions, allowing them to flourish in places where the Sun doesn’t shine—like the deep sea.

Now, scientists have discovered chemosynthetic animals, such as foot-long tubeworms and mollusks, nearly six miles beneath the ocean surface, deeper than these ecosystems have ever been observed before, according to a study published on Wednesday in Nature. 

Researchers witnessed the hotspots of chemosynthetic life in person during crewed dives in the Fendouzhe submersible, which descended nearly 31,000 feet to the ocean’s deepest regions, known as hadal trenches, in the North Pacific.

Welcome back to the Abstract! Here are the climate warnings, cosmic apocalypses, and wolf tales that made an impression on me this week.

First, a dispatch from the northernmost settlement on Earth, where climate warming is completely reshaping the landscape. Then: a case of star-crossed companions, encounters with globular clusters, and some trophic cascades as a treat.

“Unseasonably warm” hits differently in Svalbard

Bradley, James et al. “Svalbard winter warming is reaching melting point.” Nature Communications. 

Science journals are constantly packed with new alarms about human-driven climate change, but one dispatch in particular stood out to me this week. The authors report a freakish warm spell that occurred in Svalbard, a Norwegian Arctic archipelago, in February 2025, and include surreal accounts of how the normally frozen research outpost turned into a “melting ice rink,” according to the study. 

“Svalbard is at the front line of the climate crisis, warming at six to seven times the global average rate,” said researchers led by James Bradley of Queen Mary University of London.

“Our winter-time field campaigns in Svalbard are conducted under the expectation of sub-zero temperatures and extensive snow cover—conditions that have historically been typical in Svalbard during winter,” the team continued. “However, in February 2025, we encountered air temperatures persistently above 0°C, as well as rainfall, exceptionally low snow cover, and pooling meltwater covering the tundra.”

Bradley and his colleagues were based around Ny-Ålesund, the world’s northernmost permanent settlement, which is about 750 miles from the North Pole. From 1961 to 2001, the town’s average air temperature in February hovered around -15°C (or 5°F). In February 2025, the average was -3.3°C (26°F), with the hottest day reaching 4.7°C (40°F).

All of us are now living with the effects of climate change, but the authors document the dizzying pace of change in this polar community and cite tangible differences as their familiar research haunt thaws out.

“Vegetation emerged through the melting snow and ice, displaying green hues typically associated with spring and summer,” the team said. “Blooms of biological activity were widespread across the thawing tundra. Surface soils, which are typically frozen solid during this time of the year, thawed such that they were soft enough to be directly sampled with a spoon, rather than digging snow pits to the soil surface and using drills and pickaxes to extract frozen soil samples (which has been necessary during our normal wintertime sampling operations).” 

The researchers also note that Arctic communities and infrastructure are reeling from the changes, which include an increased risk of avalanches and unstable snowpack. New foundations have been installed in many buildings, including the team’s research bases, to keep up with instabilities from thawing permafrost.

The team concludes with a sentiment that is becoming more common in this field: It may be worse than we think. It’s not an uplifting thought, but one that should be confronted, especially since few people are able to travel to these remote communities to experience the changes for themselves.

“The thaw event of February 2025 was not an isolated occurrence,” the team warned. “Witnessing it in real time served as a reminder of the accelerating pace of change, and made us wonder if we have been too cautious with our climate warnings.”

In other news…

First sighting of the Betelbuddy

Howell, Steve B. et al. “The Probable Direct-imaging Detection of the Stellar Companion to Betelgeuse.” The Astrophysical Journal Letters.

Betelgeuse, the supergiant star on Orion’s left shoulder, may have a Betelbuddy. Astronomers think they have directly spotted Betelgeuse’s companion star, provisionally called Alpha Ori B, which orbits the senescent giant every six years and has been predicted for years.

We “report the likely direct-imaging detection of a stellar companion to Betelgeuse,” said researchers led by Steve Howell of NASA Ames Research Center, who captured the images with an instrument on Hawaii’s Gemini North telescope. “The results presented here are not definitive as the detection is at the limit of the instrument capabilities. However, the results do present the most direct and substantive evidence for the existence of a stellar companion to Betelgeuse, as well as the properties of that companion.”

Betelgeuse’s wild variations in radiance, especially the so-called Great Dimming of 2020, are seen by some stargazers as heralds of imminent supernova explosion. Astronomers ultimately showed that the Great Dimming was just some dust coughed out by the dying giant, but Betelgeuse could still blow at any time—and when it does, it will take its companion down with it. 

Left alone, Alpha Ori B would mature into a main-sequence star similar to our Sun, but “it will likely never arrive at that stage as Betelgeuse is predicted to produce a much-anticipated supernova in the coming millennia,” the study noted.

The perils of supergiant siblings! At least the new star might get a cool name before it's blown to bits. Since Betelgeuse means “the hand of the giant” in Arabic, the new study suggests naming the star “Siwarha,” or “her bracelet.” But considering the future in wait for the star, I’d say it's more a handcuff than a bracelet.

Watch your back for globular clusters  

Ishchenko, Maryna, and Berczik, Peter. “Gravitational influence of the globular cluster NGC 7078 (M 15) flyby of the Oort cloud system.” Astronomy & Astrophysics.

We move now from pyrotechnic stellar detonations to killer globular clusters. The universe is a dangerous place.

Using data from the Gaia telescope and next-generation simulations, scientists gamed out the probability that the Oort cloud, the spherical mass of icy bodies that surrounds our solar system, might be disrupted by passing globular clusters, which are clumps of stars wandering around the galaxy. 

“We identified 35 globular clusters that could potentially experience close encounters with the Sun…throughout the Sun’s entire lifetime,” said the authors Maryna Ishchenko and Peter Berczik of the National Academy of Sciences of Ukraine. “Comet activity influenced by these interactions could disrupt ecosystems or pose threats to life.”

Even if these clusters passed more than a hundred light years from the Sun, they could still have a major effect, possibly nudging a slew of comets into the inner solar system that could pelt Earth and spark mass extinction events.

While it’s hair-raising to imagine marauding star blobs nudging death snowballs toward Earth, there is zero threat of such an encounter happening within our lifetimes, as no cluster is currently nearby. But it’s a helpful heads-up to flag for Earthlings in tens of millions of years, whatever shape they might take. 

Wolves at the table help aspens become stable

Painter, Luke E. et al. “Changing aspen stand structure following large carnivore restoration in Yellowstone.” Forest Ecology & Management. 

Wolves continue to reshape Yellowstone National Park in the wake of their reintroduction to the historic range in the mid-1990s. During the long absence of the predators, which were wiped out by humans in this area by 1930, animals that would normally be wolf-chow, especially elk, spiraled ever upwards in numbers, putting pressure on many trees and plants.

Now, a study documents “the first new generation of overstory aspen trees in Yellowstone’s northern range in 80 years” mainly due to “increased predation [that] has caused a sustained reduction of elk numbers within the park, as well as changes in elk distribution, resulting in less browsing,” said researchers led by Luke Painter of Oregon State University.   

New small trees are “present in 43 percent of stands and 22 percent of random plots in 2020–21, where none were found in 2012, beginning to replace an overstory in pronounced decline.” 

“While a return to more extensive aspen stands will take time, and future conditions may not fully replicate the past, these new trees will help to ensure that aspen will persist into the future as a cornerstone of biodiversity in the northern Yellowstone landscape, and an example of widespread ecological change resulting from large carnivore restoration,” the team said.

To that end, movements to reintroduce carnivores—including bears, tigers, wolverines, and wolves—are ongoing around the world, in part because of observed ecosystem benefits. While these efforts must weigh risks to surrounding farms and communities, it is amazing to consider the far-reaching consequences that the 120-odd wolves that make up Yellowstone’s packs have had on its iconic landscape in just one generation.

Thanks for reading! See you next week.

Humans may be tiny compared to the immensity of Earth, but our activity can alter its dynamics on a planetary scale—for good and ill. Scientists have even discovered that Earth’s rotation has shifted due to our influence.

According to a recent study published in Geophysical Research Letters, humans have pulled Earth’s poles slightly off-kilter by building huge dams. The results shed light on how future forces like ice melt, sea level rise, and continued dam construction might shape our planet’s rotation.

In an ideal model, Earth’s geographic poles in the Arctic and Antarctic align exactly with its axis of rotation. In reality, the poles drift from the axis because they are sensitive to the constant redistribution of mass on the planet’s surface and in its interior. This drift, called true polar wander, is critical to our daily lives, as it influences navigation and timekeeping technologies like GPS, as well as astronomical observations. 

“Imagine a spinning balloon and, let's say, a fly lands on it,” said Natasha Valencic, a graduate student in the department of Earth and planetary sciences at Harvard University who led the study. “Basically, the pole will move away from the extra mass. That’s what we see with the Earth.”

Scientists have known for years that the vast amount of water locked up in dams around the world exerts influence on sea levels and other large-scale phenomena. But Valencic and her colleagues are the first to calculate how dams impact true polar wander. The team analyzed a comprehensive sample of nearly 7,000 dams built globally from 1835 to 2011, which collectively contain enough water to fill the Grand Canyon twice. 

“We really focus on the big ones,” Valencic said, adding that the dams in the study all contain at least one cubic kilometer of volume. About a quarter of catalogued dams are below that cutoff, but excluding them “likely had a negligible impact” on results, according to the new study.

The team estimated that these colossal water impoundments have caused Earth’s poles to wander a total of about 3.7 feet over the past two centuries—a small amount, but still incredible to think about—and that motion hasn’t all been in the same direction, shifting based on where dams were being built. 

From 1835 to 1954, most dam production occurred in North America, which propelled the North Pole in the other direction by about eight inches toward the 103rd meridian east, which runs through Eurasia. From the 1950s to 2011, the dam boom moved to East Africa and Asia, causing the pole to wander 22 inches to the 117th meridian west, which passes through North America. 

In total, the dam-related drift is small relative to other forces in the so-called “budget” of polar wander, such as ice melt, sea level rise, or the roiling convections in Earth’s mantle. But it’s important to tease out the contributions of each factor to make projections about where, and how far, the poles might wander in the future.

“It is actually a pretty big debate—how important convection is, as opposed to ice melting and other phenomena, like dams,” Valencic said. “Dams are a smaller contribution to polar wander; maybe an order of magnitude smaller than ice melt. But still, it's important to close the budget.”

In addition to isolating each input on polar wander, researchers want to understand the head-spinning ways in which they all interact. Human-driven climate change is fueling the rapid loss of glaciers and ice sheets around the world and subsequent sea level rise. Those trends affect polar wander by shifting mass around Earth’s surface. Polar wander is, in turn, linked with regional differences in sea levels. 

“When the axis moves in one direction, the hemisphere toward which it's moving sees a sea level fall and the same thing happens in the opposite hemisphere,” Valencic said (this effect is illustrated in figure 1 of this study). “So if it's moving toward the northeastern hemisphere, the southwestern one will also see a fall, and the other two will see a rise.”

Unraveling this whole tapestry of natural and anthropogenic inputs is no easy task, but it’s possible to tug on a few fascinating threads. For instance, scientists reported in 2024 that recent human-linked shifts in ice and groundwater are slowing Earth’s rotation at a rate of 1.33 milliseconds per century. This factor may eventually become a more forceful brake on Earth’s rotation than the Moon’s tidal influence. 

Meanwhile, the largest dam on Earth, China’s Three Gorges, is estimated to single-handedly account for a rotational slowdown of 0.06 microseconds and a 0.8-inch polar shift, if its reservoir is filled to capacity, according to a 2005 study.

So while the overall effect of dams on polar wander is relatively small, “it's still a factor that we have to think about,” Valencic concluded. “If we want to fully understand polar wander, and what's going on with the axis, we need to pin everything down.”

Welcome back to the Abstract! Here are the studies that made me smile, think, and despair for humanity this week.

First up, it’s officially a hot Jurassic summer with the recent release of yet another Mesozoic movie filled with de-extincted animals that are oddly preoccupied with human flesh. We’ll lead with a story about a fantastic Jurassic predator that didn’t make the cut for Jurassic World: Rebirth, but will eternally star in your nightmares hereafter.

Then: a whole new world, the horrific consequences of Medicaid cuts, and the cosmologies of ancient graveyards.

The case of the cursed ichthyosaur 

Lindgren, Johan et al. “Adaptations for stealth in the wing-like flippers of a large ichthyosaur.” Nature.

Jaws, a summer blockbuster about how a rampaging shark can expose paradigms of masculinity, turned 50 years old last month. But if you want to meet a truly O.G. stealth ocean predator, you'll need to wind the clock back another 181 million years, according to a new study about Temnodontosaurus, a Jurassic predator that belongs to the extinct ichthyosaur family.

Scientists have discovered an exquisitely preserved front fin from this giant hunter, which grew to lengths of more than 30 feet. Unearthed in Germany, the fin includes a “wing-like” shape with “a serrated trailing edge” that probably evolved to reduce the sound it makes while sneaking up on its prey, according to researchers led by Johan Lindgren of Lund University. 

183-million-year-old soft-tissue fossil (SSN8DOR11; Paläontologisches Museum Nierstein, Nierstein, Germany). Image: Randolph G. De La Garza, Martin Jarenmark and Johan Lindgren.

“The notably wing-like fin sheds light on the unique hunting strategy” of Temnodontosaurus, “revealing secondary control structures that probably served to minimize self-generated noise during foraging activities in low-light habitats—in effect, a novel form of stealth (silent swimming) in an ancient marine reptile,” the team said in the new study. 

In other words, this animal had a silencer built into its fin, all the better to ambush fish, squid, reptiles, and other aquatic Jurassic delicacies. But wait—it gets creepier. Temnodontosaurus is most famous for its absolutely enormous eyeballs, with sockets that measured some 10 inches in diameter, potentially making them the biggest eyes of any animal that ever lived.

“A conspicuous feature of Temnodontosaurus is its huge eyeballs; these are the largest of any vertebrate known, rivaling those of the giant and colossal squid (of the genera Architeuthis and Mesocychoteuthis) in absolute size,” Lindgren and his colleagues said. “There is broad consensus that the eyes conferred advantages at low light levels, and thus were well suited either for nocturnal life or deep diving habits.”

Temnodontosaurus, staring at you from beyond the grave. Image: Ghedo, taken at the Paris Museum of Natural History

In Jaws, the shark hunter Quint, played by Robert Shaw, seems especially haunted by the eyes of sharks, describing them as “lifeless eyes, black eyes, like a doll's eyes” in his chilling firsthand account of the sinking of the U.S.S. Indianapolis.

But hey, I’ll take the doll’s eyes of a great white over the freakish monster gaze of Temnodontosaurus any day of the week (or geological epoch). What a relief that none of us will ever encounter this nighttime predator with its bus-length body, acoustic invisibility cloak, and pizza-pan peepers.   

In other news…

New sednoid just dropped

Chen, Ying-Tung et al. “Discovery and dynamics of a Sedna-like object with a perihelion of 66 au.” Nature Astronomy.

Scientists have discovered a new world in the solar system: the trans-Neptunian object (TNO) 2023 KQ14, nicknamed Ammonite. The object is estimated to be about a hundred miles across and has an extreme orbit that takes it as far as 252 times the orbit of Earth. It belongs to a family of distant worlds called “sednoids” after the dwarf planet Sedna. 

https://www.youtube.com/watch?v=z561PGgTe8I

“The discovery of ‘Ammonite’...offers a valuable opportunity to evaluate current models of outer Solar System formation and evolution,” said researchers led by Ying-Tung Chen of Academia Sinica in Taipei. “These findings highlight the diversity of orbital properties and dynamical behaviours among distant Solar System objects.”

As an interesting twist, this new world may be a strike against the idea that a giant hypothetical planet, popularly known as Planet Nine, is lurking in the outer reaches of the solar system. Its orbit doesn’t seem to line up with that theory. Time will probably tell, because Planet Nine—if it does exist—is running out of places to hide.

Medicaid cuts could cause thousands of excess deaths by 2034

Basu, Sanjay et al. “Projected Health System and Economic Impacts of 2025 Medicaid Policy Proposals.” JAMA Health Forum.

There has been a lot of speculation about the extreme Medicaid cuts in the recently passed Big Beautiful Bill, but a new report summarizes the predicted effects with devastating brevity. 

“CBO projections suggest 7.6 million individuals in the US would become uninsured by 2034 due to Medicaid policy changes” resulting in an annual increase of “approximately 1,484 excess deaths, 94,802 preventable hospitalizations” and “1.6 million people delaying care due to cost,” said researchers led by Sanjay Basu of the University of California, San Francisco.

This is a conservative estimate: In the higher-impact scenario where more than 14 million people lose Medicaid by 2034, annual impacts “are estimated be substantially greater: 2,284 excess deaths, 145,946 preventable hospitalizations [and] 2.5 million people delaying care,” according to the study.

This analysis doesn’t include the cutting of subsidies to the Affordable Care Act Marketplace plans or possible changes to Medicare, which will compound these negative effects. At the risk of sounding glib…seems bad!

Eternal sunsets for the Yangshao dead

Chen, Yuqing. “Cosmology in the Orientation of Neolithic Burials in Central China: The Xipo and Qingliangsi Cemeteries.” Journal of World Prehistory.

You can tell a lot about a culture from the way it treats its living (see above) but also from the way it treats its dead. 

With that in mind, Yuqing Chen of Durham University set out to better understand the Yangshao culture (仰韶) of central China, which spanned 4700–2800 BCE, by cataloging the orientations of graves of people buried at the Xipo and Qingliangsi burial grounds.

This work is overflowing with cool insights, from the careful placement of goods inside graves, like cooking pots and ovens, to reconstructions of the Neolithic sky, to an explanation of the Gaitian model of the universe in which “the sky was perceived as a lid parallel to the Earth, and the celestial bodies, such as the Sun, were thought to move within the lid,” according to the study. 

A diagram of the Gaitian model. Image: Wu, 2020

Ultimately, Chen concluded that the predominately westward orientations of the Neolithic graves did not necessarily reflect “the importance of particular astronomical phenomena known to have been important in later times (e.g. the Milky Way or the star Antares), but rather the direction in which sunsets are most commonly seen throughout the year.”

“It is suggested that in the cosmology of the Late Neolithic period, the Sun was perceived to play a key role throughout the year in the worlds of the living and the dead, by maintaining the harmony of sky, Earth and human,” she said.

May we all aspire to maintain some harmony between, sky, Earth, and humanity this weekend, and beyond. Thanks for reading! See you next week.  

A major mystery about a long-lost legend that was all the rage in Medieval England but survives in only one known fragment has been solved, according to a study published on Tuesday in The Review of English Studies.

Roughly 800 years ago, a legend known today as the Song of Wade was a blockbuster hit for English audiences. Mentions of the heroic character showed up in the works of Geoffrey Chaucer, for example. But the tale vanished from the literature centuries later, puzzling generations of scholars who have tried to track down its origin and intent. 

Now, for the first time, researchers say they’ve deciphered its true meaning—which flies in the face of the existing interpretation. 

“It is one of these really interesting and very unusual situations where we have a legend that was widely known and hugely popular throughout the Middle Ages, and then very suddenly in the middle of the 16th century, in the High Renaissance, it's just completely lost,” said James Wade, fellow in English at Girton College, University of Cambridge, who co-authored the study.

In 1896, the Medieval scholar M.R. James made a breakthrough on this literary cold case when he discovered a fragment of the Song of Wade in the Humiliamini sermon, which is part of a compendium that dates back to the 12th century. James brought the text to his colleague Israel Gollancz, a philologist with expertise in early English literature, and together they worked on a translation.

It is “the only surviving fragment” of the Song of Wade, said co-author Seb Falk, fellow in history and philosophy of science also at Girton College. “Obviously it had been around already for a while by the time this was written because it's part of the culture. The person who writes this sermon clearly expects his listeners to understand it and to know what he's talking about.”

James and Gollancz “knew there was no surviving text and they understood what they were looking at,” added Wade. “This was big news. It made the papers in 1896.”

But while the 19th century scholars recovered the sermon, their translation only deepened the mystery of the enigmatic text. For instance, references to “elves” and “sprites” in the translation suggest that the Song of Wade falls into a genre of fantastical epics about supernatural monsters. But when Chaucer references Wade in his works Troilus and Criseyde and The Merchant’s Tale, he places the character in a totally different tradition of chivalric romances which are rich with metaphors, but typically favor more grounded scenarios.

Chaucer’s mentions of Wade have perplexed scholars for centuries: in 1598, for instance, an early Chaucer editor named Thomas Speght wrote: “Concerning Wade and his [boat] called Guingelot, as also his strange exploits in the same, because the matter is long and fabulous, I passe it over.” In other words, Speght didn’t even try to decipher what Chaucer meant with his references to Wade.

This punt has become legendary in literary circles. “F. N. Robinson wrote in 1933 that Speght’s comment ‘has often been called the most exasperating note ever written on Chaucer’, and Richard Firth Green observed that Speght’s note ‘has caused generations of scholars to tear their hair out,’” Wade and Falk write in their new study.  

In 1936, the scholar Jack Bennett "supposed that there is ‘probably no better known crux in Chaucer than the tale of Wade,’” the pair added.

A few years ago, Wade and Falk set out to see if they could shed light on this famous and persistent riddle. Like so many good ideas, it began over a lunchtime conversation. From there, the team slowly and methodically worked through the sermon, scrutinizing each letter and rune.  

“Just trying to decipher the thing took quite a lot of work—transcribing it and then making an initial translation,” Falk said. “But I started realizing there's some really interesting material here from my point of view, as a historian of science, with lots of animals mentioned, both in Middle English and in Latin.”

As the pair worked through the text, they began to suspect that the scribe who originally copied the work may not have been very familiar with Middle English, leading to some transcription errors with certain runes. In particular, they found that the longstanding translation of “elves” and “sprites” were, in their view, more likely to be “wolves” and “sea snakes.” This transforms a key Song of Wade passage, “Some are elves and some are adders; some are sprites that dwell by waters,” to: 

“Some are wolves and some are adders; some are sea-snakes that dwell by the water.”

It may seem like a subtle shift, but it is a major sea change for the interpretation of the text. The switch to animals, as opposed to supernatural beings, suggests that the preacher who wrote the sermon was using animals as metaphors for human vices and behaviors—a reading that provides a much better fit for the overall sermon, and at last explains why Chaucer viewed Wade in the tradition of chivalry.

“It became pretty clear to us that the scribe had probably made some kind of a mistake because he was used to writing Latin rather than English,” Falk said. “We're not here to say that people who read it differently previously were stupid to miss it, but I think by looking at it from the outside in, we got a different perspective.”

“It then radically changes the meaning of the passage from being about monsters to being about animals, and therefore, changes it from being a piece about mythical beasts to a piece about courtly romance,” he added.

In addition to relieving centuries-old headaches over the legend, Wade and Falk also speculate that the sermon was originally written by English poet and abbot Alexander Neckam (1157–1217), based on its style and context clues. 

For the researchers, the thrill of the discovery lies not only in decoding the fragment, but in recovering a missing piece of cultural memory. While their new translation and attribution to Neckam are both tentative and may be disputed by other scholars, the study still opens a window into a long-lost legend and shows how fresh eyes can uncover insights in even the most perplexing fragments.

“By putting a completely different slant on it and, we think, understanding it properly, we have come much closer to the true meaning of the Wade legend,” Falk said. “Now, obviously we've only got three lines of this presumably much longer poem, and therefore, we can't pretend that we understand the thing in full, but I think we can understand it much better than we ever have before.”

“It reminds us that as time moves on, there's always the possibility of generational amnesia, of forgetting things, of losing things, and that when you have a chance to get a little bit back of something that humanity has lost, or that culture has lost, it's a really exciting moment,” Wade concluded.

Welcome back to the Abstract! Here are the studies that caught my eye this week.

First up, a bummer! NASA is facing devastating cuts to Earth science, and science in general, which is pretty important for an agency tasked with understanding the universe. I try to keep this newsletter relatively downer-free, but current events are not cooperating with this aim.  

Then: the early bird gets the comet, a donkey destined for decapitation, a grand universal theory of coolness, and the case of the stolen exomoons.  

Knowing about the planet we live on is good, actually

Millet, Dylan et al. “NASA Earth Science Division provides key data.” Science.

This may sound obvious for the esteemed readers of this newsletter, but it apparently bears repeating: Earth, our home planet and the only known life-bearing world in the vast expanse of spacetime, is worthy of some passing interest.

This is true because—and I can’t stress this enough—we live on planet Earth. All our bones and guts and snacks are here, so it’s probably wise to get the lay of the land. But as a bonus, Earth is wildly interesting, a restless substrate unlike anything we have seen in our own solar system or beyond it. 

Despite these considerations, the Trump administration plans to gut NASA’s Earth Science Division (ESD), the world leader in world-watching. In a letter published in Science, researchers from the recently dissolved NASA Earth Science Advisory Committee lamented the administration’s proposed budget cut of more than 50 percent to ESD, warning that it “would come at a profound cost to US society and scientific leadership.”

“NASA ESD accounted for just 0.03 percent of US spending in 2024,” said researchers led by Dylan Millet of the University of Minnesota. “This investment returns its value many times over by improving predictions, by spurring technological innovation and high-tech jobs, and by forging the knowledge of the planet that is needed for short- and long-term planning.”

“The budget cuts proposed for ESD would cancel crucial satellites that observe Earth and its atmosphere, gut US science and engineering expertise, and potentially lead to the closure of NASA research centers,” the team said. “Given that the cuts would prevent the US from training and preparing the next generation of the scientific and technical workforce, the consequences would be long-lasting.”

This is just the latest appeal from scientists on behalf of NASA, which is also facing catastrophic cuts to its overall Science Mission Directorate (SMD), the arm that oversees ESD. Last week, every past administrator of the SMD, the agency's top job for science leadership, signed a letter urging Congress to reject the cuts of about 47 percent to the directorate. 

“Each one of us knows what it’s like to shepherd an ambitious project forward, knowing that its payoff will come years after we have left the agency,” the administrators said. “This proposed budget ends nearly all future investments for both new missions and advanced technology for science. It walks away from dozens of current, extraordinarily successful and productive science missions in extended operations on a combined budget that is only about three percent of NASA’s annual funding.”

Fortunately, the US Senate appropriations committee has voted in favor of a bill rejecting the science cuts, but it has a long road to go down before taking effect, with plenty of opportunity to fall apart. 

Needless to say, turning a blind eye to Earth at a time when our activities are reshaping its climate and biosphere, would be a huge loss. As one last twist of the knife, Trump just gave the top job at NASA to the guy from The Real World—all while ignoring the actual real world. 

In other news…

Mark your calendars for July 2061

Barbieri, Cesare et al. “Preparing for the 2061 return of Halley’s comet. A rendezvous mission with an innovative imaging system.” Planetary and Space Science.

Prepare for the return of everyone’s favorite space iceball: Comet Halley. Scientists have flagged the comet’s next visit as arriving in the summer of 2061 and proposed an audacious space rendezvous with Halley on its wild ride toward the Sun. 

“Although the crucial phases of the comet’s ingress in the inner Solar System are still more than 30 years in the future, we started to examine the feasibility of a space mission using present-day rockets and technologies,” said researchers led by Cesare Barbieri of the University of Padova.

God bless the astro-preppers. Sure, this event will occur decades into the future, in the twilight of the millennials. But they make a pretty good case that we should get moving if we want to take full advantage of the iconic visitor, which “will be better positioned for observation from terrestrial observers than during the 1985–1986 apparition, as it will be on the same side of the Sun as the Earth.”

“We stress that a concerted effort is needed in the current decade to plan and approve a rendezvous mission to [Comet Halley],” the team concluded. “Indeed, the scenario here described needs launches before 2040, less than 15 years from now.”

The last days of a sacrificial ass 

Arnold, Elizabeth et al. “An isotopic perspective on equid selection in cult at Tell eṣ-Ṣâfi/Gath, Israel.” PLOS ONE.

Who would have guessed that a study about a Bronze Age donkey corpse would be a tear-jerker? Researchers have shed new light on female donkeys (or jennies), which were imported from Egypt to the Tell es-Safi/Gath site in Israel some 5,000 years ago for ritual purposes. 

One specimen, called EQ1, is particularly noteworthy because it was decapitated and had its limbs tied together, unlike all the other donkeys buried at the site. "It is evident the animal was sacrificed, the head entirely cut off and carefully placed on the abdomen facing in the opposite direction,” said researchers led by Elizabeth Arnold of Grand Valley State University.  

“It can be deduced that even though EQ1 was grazed locally toward the end of her life, she was treated slightly differently from the other local equids,” the team continued. “This imported donkey was kept penned and foddered with hay that was harvested in the valley, a product of dry farmed cereals. This donkey was never herded with other livestock east of the site.”

The unique treatment of EQ1 suggests that the “Egyptian donkey might have been seen as an exotic and special animal, worthy of specific ritual use,” the study concluded. While it’s truly impressive that so much about this jenny can be inferred from her bones, there’s also an eerie pathos to imagining the animal hanging out for months, receiving preferential treatment, unaware of the sand flowing through the hourglass.    

It’s a real cool club, and you’re not part of it

Pezzuti, Todd and Warren Caleb et al. “Cool People,” Journal of Experimental Psychology.

Science has invested its prodigious powers into the ultimate social mystery: What makes a person “cool”? Is it putting “cool” in scare quotes? (No!). Researchers have now developed a working theory of coolness by asking nearly 6,000 people in Australia, Chile, China, Hong Kong, Germany, India, Mexico, Nigeria, Spain, South Africa, South Korea, Turkey, and the United States to define this much-coveted attribute.

The results revealed six main traits associated with cool people, which were distinct from traits linked with “good” people. “Cool people are perceived to be more extraverted, hedonistic, powerful, adventurous, open, and autonomous, whereas good people are more conforming, traditional, secure, warm, agreeable, universalistic, conscientious, and calm,” said authors Todd Pezzuti of Universidad Adolfo Ibañez, Caleb Warren of the University of Arizona, and Jinjie Chen of the University of Georgia.

“This pattern is stable across countries, which suggests that the meaning of cool has crystallized on a similar set of values and traits around the globe,” the team said.  

There you go, the cheat code to coolness. I’m exhausted just reading it.

Grand Theft Moons

Dencs, Zoltán et al. “Grand theft moons: Formation of habitable moons around giant planets.” Astronomy & Astrophysics.

The winner of Best Study Title this week goes to “Grand theft moons,” which explores how stars might steal moons from their own planets, and whether these “exomoons” could be habitable. The study models the formation of exomoons around giant gas worlds at various distances from their stars, measured in astronomical units (au), where one au is the distance between Earth and the Sun. 

Planets with orbits of one or two au are more likely to sport exomoons in the habitable zone, but they are also at risk of stars yanking the exomoons away in brazen acts of “stellar theft,” according to the study.

“Our simulations show that moons with masses between Mars and Earth could form around planets with masses about ten times that of Jupiter, and many of these moons could potentially be habitable at 1 − 2 au stellar distances,” said researchers led by Zoltán Dencs of the Gothard Astrophysical Observatory, “These findings suggest that it is worth investigating not only rocky planets but also gas giants for Earth-like habitable environments.”

In addition to raising some fascinating questions, let’s hope this study inspires Rockstar to take the GTA franchise to outer space. I want to throw an astronaut off a lunar buggy and take it for a joyride across the Moon.

Thanks for reading! See you next week.

Scientists are searching for signs of a “fifth force” at the center of our galaxy that could rewrite the rules of gravity and help to resolve some fundamental mysteries in the universe, according to a recent study in the journal Astronomy & Astrophysics. 

For decades, researchers have speculated that exotic new physics could fill missing links in our current understanding of gravity, which is based on Einstein’s general relativity. One idea is that a hypothetical fifth force—in addition to gravity, electromagnetism, and the strong and weak nuclear forces—known as a Yukawa-type correction might subtly alter how gravity behaves over certain distances. A direct detection of this force could shed light on longstanding puzzles like the nature of dark matter, an unidentified substance that accounts for most mass in the universe, or the behavior of gravity at quantum scales.

Now, researchers have used the advanced GRAVITY instrument at the Very Large Telescope in Chile to look for hints of this correction near the supermassive black hole at the center of the Milky Way. 

“The current theory of gravity is unable to explain some observations performed in the universe” such as “the presence of dark matter, or the expanding universe,” said Arianna Foschi, a postdoctoral researcher at the Paris Observatory and an author of the new study, in an email to 404 Media. 

“One possible explanation for this may be that the theory of gravity is not complete yet and some modifications to explain those effects are needed,” she added. “We looked exactly for the presence of such a modification.” 

Whereas gravity influences objects over massive cosmic distances, the Yukawa correction is predicted to be short-ranged and undetectable in local environments, such as our planet or the solar system. However, hints of this force, if it exists, could be observable near our galaxy’s supermassive black hole, Sagittarius A*, a chaotic region that showcases gravity at an extreme.

With that in mind, the GRAVITY collaboration trained its namesake instrument on a massive star called S2 that is very close to the supermassive black hole, orbiting it once every 16 years. Due to its proximity to the black hole, S2 has yielded many insights about gravity and general relativity, making it an attractive target for the team’s hunt for a fifth force. 

The motion of S2, along with other stars around Sagittarius A* “can be incredibly useful to check whether objects orbiting around a supermassive black hole follow the same rule as planets in the solar system,” Foschi said. “Observations suggest that indeed the law that makes S2 move is the same as the Earth, however there still can be modifications that cannot be seen ‘by eye’ but needed to be tested.”

As it turned out, the instrument’s precise measurements did not detect a fifth force, but they did get us closer. The results narrowed down the parameters of its possible intensity, represented by the variable “alpha.” 

“If before, alpha must be less than 0.01, now with our data we showed that it must be smaller than 0.003, significantly improving this constraint,” Forschi said.

Lorenzo Iorio, a physicist with the Italian Ministry of Education and Merit and an expert on modified theories of gravity, said in an email that the team’s approach made sense in principle, but that he had some concerns with the methods. Iorio, who was not involved in the study, cited updated formulas and variables that were left out of its models, but that he said might have improved its accuracy. For instance, the models did not account for the Lense-Thirring effect, which is a relativistic phenomenon near massive objects, or the influence of the accelerations of stars near S2, among other factors.

“I'd say that it is an interesting study that, rather, points towards the possibilities offered by this peculiar celestial laboratory (Sagittarius A* and the S stars),” Iorio said. “It should be repeated more accurately.”

Foschi acknowledged that the variables were not included in the models, but noted that the GRAVITY observations were not yet sensitive enough to capture many of those details—yet.

“An upgrade of the GRAVITY instrument is already on its way to increase the sensitivity and measure indeed these higher order effects, but we have to wait for that,” she noted.  

“We would like to extend the same analysis to data of other stars around Sagittarius A* and the improving precision of the GRAVITY instrument will help us to do so. In this way we will be able to put on even stronger constraints.” 

To that end, the GRAVITY collaboration plans to continue gazing at the center of the galaxy for signs of a fifth force, or any other modifications to gravity. 

“If such a force is observed, it would be an incredible breakthrough in physics, because it would modify one of the oldest physical laws we have,” Foschi concluded. “It would have consequences in every field of physics.”

Welcome back to the Abstract! 

Here’s some of the most intriguing studies I came across this week: We’ll lead with a nostalgic trip down memory lane—so far down the lane, in fact, that we’ll end up in the Sun’s infancy 4.6 billion years ago. Most of us didn’t have to deal with supernovas exploding in our faces as babies, but that’s the kind of environment that might have greeted our newborn star. New research sheds light on when, and how, the Sun left the maelstrom for single life.

Then, scientists recreate a perilous ocean voyage from prehistory; a pair of long-lost creatures finally turn up; and orcas become the first marine mammal known to fashion tools.

When the Sun declared independence

Zwart, Simon Portegies and Huang, Shuo. “Oort cloud ecology III. The Sun’s departure from the parent star cluster shortly after the giant planets formed.” Astronomy & Astrophysics.

The Sun was not always a loner. It was born alongside thousands of stellar siblings in a dense parent cluster some 4.6 billion years ago before striking out on its own, though the circumstances of its departure remain unclear.

Scientists have now searched for clues to solve this mystery in the Oort Cloud, a massive sphere of tiny icy bodies that surrounds the Sun, extending for more than a light year around the entire solar system. The cloud is thought to have been formed by the four giant planets—Jupiter, Saturn, Uranus, and Neptune—as they migrated through space, scattering debris to the outer reaches of the solar system where it remains adrift to this day. 

By running simulations of this tumultuous period, a team of researchers hypothesized that the Sun probably left the nest very early, about 12 to 20 million years after the formation of the giant planets (which were themselves born only a few million years after the Sun). If it had lingered longer, the disruptive environment would have left the Sun with a much smaller Oort cloud, or perhaps none at all. 

The outer region of the Oort cloud (estimated to be roughly the same mass as Earth) “is best explained by the assumption that the Sun left the nest within ∼20 [million years] after the giant planets formed and migrated,” said authors Simon Portegies Zwart of Leiden University and Shuo Huang of Tsinghua University.  

“An early escape also has consequences for the expected number and the proximity of supernovae in the infant Sun’s neighborhood,” the team added. “The first supernova typically happens between 8 and 10 [million years] after the cluster’s birth.” 

In other words, the baby Sun may have been in the blast zone of an exploding star, which could explain the presence of radioactive isotopes preserved in many ancient meteorites. By moving out at the tender age of 20-odd million years old, the Sun may have escaped even more tumult.

The team also noted that “signatures of the time the Sun spent in the parent cluster must still be visible in the outer parts of the solar system even today.” Future observations of the Oort Cloud could help us decipher this rambunctious chapter of the Sun’s life.  

A voyage 30,000 years in the making 

Chang, Yu-Lin et al.“Traversing the Kuroshio: Paleolithic migration across one of the world’s strongest ocean currents.” Science Advances.

Kaifu, Yousuke et al. “Paleolithic seafaring in East Asia: An experimental test of the dugout canoe hypothesis.” Science Advances.

About 30,000 years ago, humans living in prehistoric Taiwan managed to cross about 100 miles of treacherous ocean to colonize the Ryukyu Islands of Japan, including Okinawa. How they accomplished this astonishing feat is a major puzzle, but scientists endeavored to find out the old-old-really-old-fashioned way: recreating the voyage themselves. 

Using only stone tools that would have been available to Paleolithic humans, they fashioned several watercraft to brave the Kuroshio, “one of the world’s strongest ocean currents,” said researchers led by Yu-Lin Chang of the Japan Agency for Marine-Earth Science and Technology in one of two studies about the project out this week. 

“We tested reed-bundle rafts (2014–2016) and bamboo rafts (2017–2018) as the first two candidates for possible watercraft, but they were unable to cross the Kuroshio Current,” noted researchers led by Yousuke Kaifu of the University of Tokyo in the other study.

In 2019, the team finally succeeded with a cedar dugout canoe that they paddled across the 140-mile stretch between Wushibi, Taiwan, and Yonaguni Island in a little over two days. 

“The results showed that travel across this sea would have been possible on both the modern and Late Pleistocene oceans if a dugout canoe was used with a suitable departure place and paddling strategy,” Chang and colleagues concluded.

Museums: the world’s biggest lost-and-found boxes

Sims, Megan et al. “Rediscovered lost holotypes of two Paleogene mammals, a Neogene bird, and other published specimens from an orphaned collection.” Journal of Vertebrate Paleontology.

Paleontologists don’t always have to schlep out into the field to find fossils; discoveries can also be made in the air-conditioned comfort of museum collections. 

Case in point: Megan Sims, the collections manager at the University of Kansas Vertebrate Paleontology Collection discovered two long-lost specimens—the 45 million-year-old rodent Thisbemys brevicrista and the 30 million-year-old bat Oligomyotis casementorum—while working through storage. Both fossils are holotypes, meaning that they are considered the reference point for their species as a whole. 

“The rediscovery of the two holotypes that were presumed lost, T. brevicrista and O. casementorum, are reported below,” said researchers led by Sims. The bat holotype is particularly “important as one of very few bat fossils of Oligocene age from the entire continent of North America,” the team noted.  

As someone who constantly finds lost relics from my past stuffed in dressers and under beds, I find studies like this deeply relatable. 

A peek inside the orca spa

Weiss, Michael et al. “Manufacture and use of allogrooming tools by wild killer whales.” Current Biology.

Orcas fashion tools out of kelp that they then use to groom each other, according to scientists who observed this behavior in a population of resident killer whales (Orcinus orca ater). The team used drones to capture 30 “bouts” of what the team called “allokelping” in this endangered orca population in the Salish Sea, providing the first evidence of tool manufacturing in a marine mammal.

“We observed whales fashioning short lengths of bull kelp (Nereocystis luetkeana) stipe from complete stalks, positioning the stipe between themselves and a partner, and then rolling the kelp along their bodies,” said researchers led by Michael Weiss of the Center for Whale Research. 

“We hypothesize that allokelping is a cultural behavior unique to southern resident killer whales. Future work should investigate if and how allokelping is learned, and whether it occurs in other killer whale societies.”

Thanks for reading! We’ll be off next weekend for the Fourth of July holiday. May your next two weeks be as restorative as an orca massage.

Çatalhöyük, a settlement in Turkey that dates back more than 9,000 years, has attracted intense interest for its structural complexity and hints of an egalitarian and possibly matriarchal society. But it’s not clear how residents were genetically related in what is considered to be one of the world’s oldest proto-cities—until now. 

Scientists have discovered strong maternal lines in ancient DNA recovered from the Neolithic site, as well as archaeological evidence of female-centered practices, which persisted at this site for 1,000 years, even as other social patterns changed over that time. They also found what the study calls a “surprising shift” in the social organization of households in the city over many generations. 

The results don’t prove Çatalhöyük society was matriarchal, but they demonstrate that “male-centered practices were not an inherent characteristic of early agricultural societies” which stands in “stark contrast” to the clearly patriarchal societies established later across Europe, according to a study published on Thursday in Science.

“Çatalhöyük is interesting because it's the earliest site with full dependence on agriculture and animal husbandry, and it’s larger than its contemporaries,” said Eren Yüncü, a postdoctoral researcher at Middle East Technical University who co-led the study, in a call with 404 Media. “Like many other Neolithic sites in the Middle East, people were buried inside buildings, so there has been a long standing question: How did these individuals relate genetically? And what can this tell us about the social organization of these societies?”

“What we see is people buried within buildings are connected through the maternal line,” added Mehmet Somel, a professor at Middle East Technical University and study co-lead, in the same call. “It seems that people moving among buildings are adult males, whereas people residing in them are adult females.”

Çatalhöyük was erected in Turkey’s Anatolia region around 7,100 BCE and was home to about 5,000 to 7,000 people at its peak, before the site was abandoned by around 5,700 BCE. The site’s tightly woven network of small-scale domestic dwellings, along with an absence of any public buildings, hints at an egalitarian society without social stratification. 

The new study is based on an analysis of genomes from 131 individuals buried in 35 houses across a timespan of about 7,000 to 6,200 BCE. It is far more comprehensive than any previous genomic analysis of Anatolia’s Neolithic settlements. 

“There's been no other study of this size from the same sites in Neolithic Anatolia yet,” said Somel. “The previous work we published had about ten to 15 individuals. Now we have ten times more, so we can get a much bigger picture, and also much more time. Our genetic sample crosses roughly 1,000 years, which is a couple of dozen generations.”

The social pattern of males moving into new locations while females remain in their natal homes is known as matrilocality. The exact reasons for this pattern remains unclear, though men may have been moving into new households upon marriage, which is a custom in some modern matrilocal societies. Somel cautioned that Çatalhöyük is a special case because the team only found evidence of matrilocality within the settlement, estimating that female offspring remained connected to their natal buildings between 70 to 100 percent of the time, whereas adult males moved to different buildings. However, immigrants to Çatalhöyük from other populations did not seem to show a strong male or female bias.

The reverse system, called patrilocality, is characterized by females moving to new locations while adult males stay in natal communities. Patrilocality is by far the more common pattern found in archaeological sites around the world, but matrilocality is not unprecedented; studies have found evidence for this system in many past societies, from Micronesia to Britain, which are more recent cultures than Çatalhöyük.

The abundance of female fertility figurines at Çatalhöyük has long fueled speculation about a possible matriarchal or goddess-centered cult. Men and women at Çatalhöyük also consumed similar foods and may have shared social status. In the new study, Yüncü, Somel, and their colleagues report that female infants and children were buried with about five times as many grave goods as males, suggesting a preferential treatment of young female burials. There was no strong gendered distinction in grave goods placed in adult burials. 

The team was also surprised to discover that the social organization of households changed across time. 

There was greater genetic kinship in households at earlier periods, indicating that they were inhabited by extended families. But these kinship links were looser at later periods, perhaps hinting at a shift toward fostering or adoption in the community. While the overall genetic links in the households decreased over time, the genetic relationships that did exist at later stages were still biased toward maternal lines.  

The possibility of an early matriarchy is tantalizing, but the nature of gender roles at Çatalhöyük remains elusive and hotly debated. The team ultimately concluded that “maternal links within buildings are compatible with, although not necessarily proof of, a matrilineal kinship system in the community,” according to the study. 

“This discussion is an interesting one, but it's not the end of the story,” Yüncü said. “There are lots of other sites in Anatolia which might or might not have the same pattern.”

“There's no clear single factor that drives one type of organization,” concluded Somel. “We need to do more studies to really understand this.”