Recent discoveries by archaeologists in Ukraine’s Crimean Peninsula, home to significant Middle to Late Paleolithic sites like Starosele, include a 5-centimeter-long bone fragment from a Neanderthal man, dating between 46,000 and 44,000 years ago. Genetic analysis shows this individual to be closely related to Altai Neanderthals through mitochondrial DNA, indicating that Neanderthal populations traveled great distances across Eurasia. Under favorable climatic conditions, these migrations likely involved the spread of the Micocchia stone tool industry, highlighting cultural continuity and regional adaptability during the Late Pleistocene.
A group of Neanderthals in a cave. Image credit: Tyler B. Tretsven.
Crimea is rich in well-preserved layered Paleolithic sites, many reflecting the biocultural and human occupation transition that occurred approximately 47,000 to 42,000 years ago.
According to earlier radiocarbon dating studies, the peninsula has been recognized as a refuge for late Neanderthals who survived just before their extinction.
Starosele, a rock shelter located in a steep valley, features four distinct cultural layers and has been researched since 1952.
“The archaeological layers of this site are rich in cultural artifacts,” stated Emily Piggott, a PhD student at the University of Vienna, along with her colleagues.
“Levels 1, 2, and 4 are linked to stone tools from the Crimean Mikokian stone tool industry, associated with Neanderthals.”
This study aimed to identify potential human remains from the thousands of fragmented bones excavated from the Starosele site.
From the 150 bone fragments analyzed, 97.3% contained sufficient collagen for taxonomic identification.
Approximately 93% of the remains belonged to horses and deer, with fewer found from mammoths and wolves, indicating that Paleolithic humans in Crimea heavily relied on horse hunting.
Notably, one bone fragment, measuring 49.8 mm in length and 18.8 mm in width, was classified as hominin.
Radiocarbon dating indicated an age range of 46,000 to 45,000 years, coinciding with the transitional period before the extinction of Neanderthals and the emergence of Homo sapiens in Western Europe.
“Particularly the remains of humans before Starosele are from a much later era of Homo sapiens,” Piggott remarked.
“Upon receiving the radiocarbon results, we realized we had uncovered a true Paleolithic hominin.”
“Neanderthals went extinct across Eurasia, replaced by Homo sapiens, yet genetic information about these earlier human populations is scarce.”
Researchers then sequenced the mitochondrial genome from this bone, confirming the individual was part of the Neanderthal lineage.
The mitogenome of this individual aligns with other Neanderthal mitogenomes previously documented in the Altai region of Siberia.
“Surprisingly, this individual shared the closest genetic ties with Neanderthals from Altai, over 3,000 kilometers to the east, as well as with Neanderthals that once roamed areas of Europe such as Croatia,” highlighted the researchers.
“This finding reaffirms previous studies suggesting that Neanderthals migrated extensively across Eurasia, traversing from central Europe to central Eurasia during the late Pleistocene.”
“This research highlights Crimea as a crucial junction in the Neanderthal migration routes.”
The findings of this study will be published in Proceedings of the National Academy of Sciences.
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Emily M. Piggott et al. 2025. A new late Neanderthal from Crimea reveals long-distance connections across Eurasia. PNAS 122 (45): e2518974122; doi: 10.1073/pnas.2518974122
Depiction of a teenage girl with a Neanderthal mother and a Denisovan father
John Bavaro Fine Art/Science Photo Library
This marks the second occasion researchers have successfully retrieved the complete genome of Denisovans, an ancient human lineage that inhabited Asia. The DNA was sourced from a tooth estimated to be 200,000 years old, discovered in a Siberian cave.
The genome indicates that there were at least three distinct groups of Denisovans, each with unique histories. It also suggests that early Denisovans intermixed with an unidentified ancient human group as well as a previously unknown Neanderthal population.
“This research is groundbreaking,” asserts David Reich from Harvard University.
“This study significantly broadened my perspective on the Denisovan ecosystem,” states Samantha Brown from the National Center for Human Evolution Research in Spain.
Denisovans were first described solely via their DNA. Finger bones retrieved from Denisova Cave in Siberia exhibited DNA distinct from both modern humans and Neanderthals found in western Eurasia. Genomic analysis indicates Denisovans mated with modern humans, with populations in Southeast Asia, including the Philippines and Papua New Guinea, carrying Denisovan DNA.
Since their initial discovery in 2010, researchers have found that: a small number of Denisovans also originated from East Asia. In June, a skull unearthed in Harbin, China, was confirmed as Denisovan through molecular evidence, providing the first insight into their physical appearance. However, despite DNA fragments being recovered from various specimens, only the original specimen yielded a high-quality genome.
Researchers led by Stéphane Pèregne from Germany’s Max Planck Institute for Evolutionary Anthropology has introduced an additional researcher. (Pèregne declined to comment as the study is pending peer review.)
In 2020, a team of researchers discovered a male Denisovan molar tooth and sequenced its entire genome from the preserved DNA.
The researchers estimated this individual lived around 205,000 years ago, judging by the number of genetic mutations and comparing them with other ancient human genomes. This timeframe aligns with findings that the deposits containing the teeth are dated between 170,000 to 200,000 years old. In contrast, the other high-quality genome belongs to Denisovans who lived between 55,000 and 75,000 years ago, revealing an earlier chapter in Denisovan history.
The researchers suggest that at least three distinct Denisovan populations likely existed, based on comparisons from various Denisovan cave sites. The oldest group comprised the individuals whose teeth were analyzed. Many millennia later, a second group supplanted this earlier population in Denisova Cave.
“Comprehending how early Denisovans were supplanted by subsequent groups underscores pivotal events in human history,” says Qiao Meifu from the Institute of Vertebrate Paleontology and Paleoanthropology in China.
A third group, absent from the cave, still interbred with modern humans as suggested by genetic testing. Thus, all Denisovan DNA present in modern humans derives from a Denisovan group about which little is known.
The new genome illuminates the fact that Denisovans mated repeatedly with Neanderthals, who resided in and around the Denisovan Cave. Notably, this genome also contained traces of Neanderthals who lived between 7,000 and 13,000 years prior to Denisovan individuals. These traces do not align with any known Neanderthal genomes, indicating that the Denisovans interbred with a Neanderthal group yet to be sequenced.
Moreover, it’s probable that Denisovans also mated with an as-yet unidentified ancient human group that evolved independently of both Denisovans and modern humans for hundreds of thousands of years. One possibility is Homo erectus, the earliest known human species to migrate out of Africa and inhabit regions as far as Java, Indonesia. However, no DNA has been retrieved to confirm this.”H. erectus, so certainty remains elusive.
“It’s endlessly fascinating to uncover these new populations,” Brown remarked.
Neanderthals may have used ocher crayons to draw on cave walls
Golodenkov/Getty Images
A fascinating yellow crayon discovered in Crimea remains sharp after over 40,000 years, indicating that marking objects was a component of Neanderthal culture. This finding serves as the most compelling evidence so far that certain Neanderthal groups utilized colored pigments symbolically, a behavior previously believed to be exclusive to humans.
“It’s truly remarkable. It expands our understanding of the symbolic application of color,” states Emma Pomeroy from the University of Cambridge, who was not part of the study.
The use of ocher, an iron-rich mineral displaying red, yellow, and orange shades, has deep roots in Europe and Africa, reaching back at least 400,000 years. Ocher fragments have been found in numerous Neanderthal sites and seem to have been utilized for practical activities like tanning skins and igniting fires, sometimes being applied to seashell beads.
Neanderthals might have also decorated their bodies, clothing, and surfaces with ocher, although such marks have long since vanished. To delve deeper, Francesco d’Errico and fellow researchers from the University of Bordeaux in France undertook a thorough examination of ocher fragments from Neanderthal sites in Crimea, Ukraine. By analyzing how Neanderthals modified these fragments and examining their wear using a microscope, they gained insights into their usage.
The most intriguing of these ocher artifacts, dating back at least 42,000 years, was yellow and shaped like a crayon, measuring about 5 to 6 centimeters long. In-depth analysis revealed that the tip had been worn down through use and then resharpened, suggesting that it was regularly reused as a marking implement.
“This is a tool that has been refined and reshaped multiple times, making it quite unique,” remarks D’Errico. “It’s not merely a standard crayon; it exists as a crayon because of its use as such. It may have been utilized for drawing lines on skin or stone, reflecting artistic endeavors.”
Ocher fragment tip utilized as a crayon and subsequently sharpened
D’Errico et al., Sci. Advances 11, eadx4722
April Nowell, a professor at Victoria University in Canada who was not part of the study, concurs. “I only retain the dot on the crayon when I aim to create precise lines or designs,” she comments.
The research team also uncovered an even older broken crayon made from red ocher, potentially as old as 70,000 years.
“A small piece of ocher can convey a wealth of information,” says Pomeroy. “It connects with our shared humanity in a deeply emotional way.”
This Crimean crayon discovery contributes to a growing array of evidence of Neanderthal artistic capacity, which includes a 57,000-year-old finger carving found on a cave wall in France, and a mysterious circle created from stalagmites 175,000 years ago in another French cave.
These findings support the notion that symbolic behavior is not merely a recent development but has deep-seated roots in our evolutionary trajectory. “The cognitive capabilities associated with symbolic actions were likely present in our last common ancestor, encompassing Homo sapiens, Denisovans, and Neanderthals over 700,000 years ago,” notes Nowell.
Ancient caves, the origins of humanity: Northern Spain
Explore some of the oldest cave paintings in this picturesque area of northern Spain. Journey back 40,000 years to discover how our ancestors lived, created, and built their lives. From ancient Paleolithic art to stunning geological formations, every cave tells a distinctive and timeless narrative.
Scientists have uncovered ice and air that is 6 million years old from a shallow ice core in the Arran Hills of East Antarctica. They believe this ancient ice showcases a preserved surface snowpack or permafrost due to the development of the East Antarctic Ice Sheet during the mid-Miocene to late Miocene epochs.
Ancient ice extracted from the ALHIC1902 ice core. Image credit: Shackleton et al., doi: 10.1073/pnas.2502681122.
“Ice cores function as time machines, allowing researchers to glimpse Earth’s past,” stated Dr. Sarah Shackleton, a scientist at the Woods Hole Oceanographic Institution.
“With the Allan Hills Core, our timeline extends much further than we previously thought was possible.”
“This is a groundbreaking discovery for the NSF-funded Center for Oldest Ice Exploration (COLDEX),” remarked Dr. Ed Brook, COLDEX director and paleoclimatologist at Oregon State University.
“We were aware that the ice in this area was ancient. Our initial estimates placed its age at around 3 million years, or perhaps slightly older, but this discovery has far surpassed our expectations.”
COLDEX is engaged in a friendly race with various international teams to push the ice core record beyond its historical 800,000-year threshold.
A European research team recently reported finding a continuous ice core dating back 1.2 million years deep within East Antarctica.
For months, the team operated in a remote field camp within East Antarctica’s Arran Hills, drilling 100 to 200 meters into the outskirts of several ice sheets, where ice movement and rugged mountain landscapes work together to safeguard ancient ice and bring it closer to the surface for easier retrieval.
In contrast, obtaining the oldest continuous ice cores from archaeological sites in East Antarctica necessitates drilling deeper than 2,000 meters.
“We are still exploring the specific conditions that enable such ancient ice to remain near the surface,” Dr. Shackleton explained.
“Besides the terrain, factors like intense winds and extreme cold may play a role.”
“The winds can disperse newly fallen snow, while the cold can slow down accumulation until the ice is nearly stationary.”
This makes the Arran Hills one of the premier locations globally for discovering shallow, ancient ice, while also being one of the most challenging environments for fieldwork.
The air trapped within these new ice cores enables scientists to directly ascertain the age of the ice by precisely measuring isotopes of the rare gas argon.
This direct dating method means that scientists can derive age indicators directly from the ice, instead of making assumptions based on accompanying features or deposits.
While this ancient ice record doesn’t form a continuous stretch, its age is unparalleled, the researchers noted.
“By dating multiple samples, our team has compiled a library of ‘climate snapshots’ approximately six times older than previously recorded ice core data, supplemented by more detailed younger data from other Antarctic ice cores,” Dr. Higgins stated.
Temperature records derived from oxygen isotope measurements in the ice indicate that the region underwent a gradual cooling of about 12 degrees Celsius (22 degrees Fahrenheit) over an extended timespan.
This marks the first direct assessment of the cooling extent in Antarctica over the past six million years.
Ongoing analyses of these ice cores aim to reconstruct atmospheric greenhouse gas levels and ocean heat content, which hold significant implications for understanding the drivers of natural climate change.
“The COLDEX team plans to return to the Arran Hills for additional drilling in the coming months, potentially yielding more detailed snapshots and even older ice,” Dr. Brook shared.
“In light of the unexpectedly ancient ice recovered in the Arran Hills, we are preparing a comprehensive, long-term study of the region with the goal of extending the record even further, which we hope to commence between 2026 and 2031.”
The team’s paper has been published today in Proceedings of the National Academy of Sciences.
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S. Shackleton et al. 2025. Miocene and Pliocene ice and air from the Allan Hills blue ice belt in East Antarctica. PNAS 122 (44): e2502681122; doi: 10.1073/pnas.2502681122
Homo sapiens may have developed greater tolerance to lead exposure compared to other hominids
frantic00/Shutterstock
Research on fossilized teeth indicates that ancient humans were exposed to harmful lead for over two million years, suggesting that modern humans might have adapted to handle this toxic metal more effectively than their predecessors.
Traditionally, lead poisoning was associated with modern issues such as industrialization, poor mining techniques, and lead additives in fuels. Fortunately, efforts to phase out lead exposure have been underway since the 1980s.
This toxin is particularly harmful to children, hindering physical and cognitive growth, while adults may experience a range of serious physical and mental health issues.
Dr. Renaud Joanne Bois and colleagues from Southern Cross University in Lismore, Australia, aimed to investigate whether our ancient ancestors faced similar lead exposure.
They examined 51 fossilized hominin teeth, representing species such as Australopithecus africanus, Paranthropus robustus, Gigantopithecus black, Homo neanderthalensis, and Homo sapiens. The fossils were sourced from regions including Australia, Southeast Asia, China, South Africa, and France.
The research team utilized laser ablation techniques to identify lead concentrations in the teeth, revealing layers of lead that accumulated during the growth of these hominids. This exposure could be attributed to environmental contaminants, such as polluted water, soil, or volcanic eruptions.
Dr. Joanne Boyau noted the surprising levels of lead discovered within the teeth. For instance, Gigantopithecus, a massive ancestral relative of today’s orangutans, primarily lived in what is now China. “If current humans exhibit similar lead levels, it indicates considerable exposure from industrial activities,” she remarked.
The research then shifted focus to understanding how both modern humans and Neanderthals managed lead exposure. The team created lab-grown brain models called organoids to analyze differences in the NOVA1 gene in both species, subsequently assessing the effects of lead neurotoxicity on these organoids.
“Our findings indicate that modern NOVA1 is significantly less impacted by lead neurotoxicity,” states Joannes Boyau.
Crucially, when archaic organoids expressed NOVA1 under lead exposure, another gene, Fox P2 exhibited notable differences.
“These genes are linked to cognitive functions, language, and social bonding,” explains Joannes-Boyau. “The diminished neurotoxicity in modern humans compared to Neanderthals could provide a crucial evolutionary advantage.” This suggests that lead exposure has influenced our evolutionary history.
However, Dr. Tanya Smith from Griffith University in Brisbane, Australia, remains cautious about the conclusions drawn by the researchers regarding lead exposure levels or potential evolutionary benefits inferred from their organoid studies.
“This paper is complex and makes speculative claims,” Smith emphasizes. “While it seems logical that ancient humans and wild primates faced some level of lead exposure, the limited scope and variety of fossils studied do not necessarily demonstrate that our ancestors were consistently exposed to lead over two million years.”
Exploring Neanderthals and Ancient Humans in France
Join New Scientist’s Kate Douglas on an engaging exploration of significant Neanderthal and Upper Paleolithic sites across southern France, spanning from Bordeaux to Montpellier.
Skeleton of a woman holding a baby in her left arm, interred in an Anglo-Saxon cemetery in Screnby, England
Dr Hugh Wilmot, University of Sheffield
Researchers are now investigating ancient pregnancy tests undertaken on women from centuries past.
For the first time, scientists have identified levels of estrogen, progesterone, and testosterone in remains of women from the 1st to the 19th century. Some of these women were entombed with their unborn children. This revelation indicates that historic bones and teeth can retain identifiable traces of specific sex hormones, which might aid in discerning which individuals at archaeological sites were pregnant or had recently given birth at the time of their demise, according to Amy Barlow from the University of Sheffield, UK.
“The physiological and emotional impacts of pregnancy, miscarriage, and childbirth carry profound significance for women, yet they remain largely unexplored in archaeological records,” she notes. “This technique could revolutionize how we comprehend the reproductive narratives of ancient populations. We’re genuinely excited about it.”
Establishing pregnancy in ancient individuals can be challenging, particularly if the fetus lacks a visible skeleton. Even second- and third-trimester fetuses may be overlooked due to their bones resembling those of the mother’s hands, often placed on the abdomen during burial.
Contemporary pregnancy tests evaluate hormone levels such as hCG in blood or urine. However, hCG degrades rapidly, leaving minimal evidence in the body.
In contrast, progesterone, estrogen, and testosterone can persist in tissues for extended periods. Recent studies have demonstrated that these steroid hormones are also present in human blood, saliva, and hair. Samples from long-buried Egyptian mummies.
To explore the likelihood of identifying ancient pregnancies, Barlow and her team analyzed rib fragments and one neck bone from two men and seven women interred in four British cemeteries. They also examined teeth from another male.
Two of the women had fetal remains discovered within them, and another two were buried alongside their newborns. The gender of the others was established through DNA analysis.
The research team ground each sample into powder and employed chemical techniques to extract the steroid hormones. Laboratory tests subsequently identified the estrogen, progesterone, and testosterone levels in each of the 74 samples.
Estrogen was only found in four samples, without a discernible pattern. This may be due to its quicker breakdown compared to progesterone or testosterone, which may not accumulate as efficiently in tissues.
However, between the 11th and 14th centuries, heightened levels of progesterone were discovered in the spines of young women who died while carrying full-term fetuses. A later pregnant woman interred in the 18th or 19th century also exhibited elevated progesterone in her ribs. Moderate progesterone levels were noted in the dental plaque of two women buried with their infants during the 5th or 6th century.
Interestingly, no testosterone was detected in the bones or teeth of these four women. However, one woman who was buried with her premature infant had trace amounts of testosterone in her dental plaque. In contrast, three unrelated women from 8th- to 12th-century sites and Roman tombs showed testosterone in all layers of their ribs and teeth.
Low testosterone levels are known to play a crucial role in women’s health, so its discovery in these samples isn’t unexpected, Barlow states. “However, the absence of testosterone may indicate that she was recently or currently pregnant at the time of her death,” she adds.
“This intersection of archaeology and hormone science is exhilarating and unforeseen,” states Alexander Komninos from Imperial College London. “These methods will enhance our ability to detect pregnancy in human remains with greater precision, providing deeper insights into ancient pregnancies.”
Nevertheless, while the findings show promise, additional research is essential to clarify many aspects, according to Barlow. For instance, moderate progesterone levels were frequently found in the bones and inner teeth of men, but the reasoning behind this remains unclear, she comments. “Interpretation is quite cautious at this junction.”
Walking through Hadrian’s Wall and Rome’s innovations: England
Join this immersive walking tour along Hadrian’s Wall, one of Great Britain’s most iconic ancient structures and a UNESCO World Heritage Site.
Astronomers utilizing the NASA/ESA/CSA James Webb Space Telescope have identified phosphine (PH)3 in the atmosphere of the brown dwarf Wolf 1130c, part of the triple system 1130ABC.
Schematic diagram of the Wolf 1130ABC triple system, featuring red dwarf star Wolf 1130a (left), compact white dwarf companion 1130b (center), and distant brown dwarf Wolf 1130c (right); each component scaled according to its relative size. Image credit: Adam Burgasser.
Wolf 1130ABC is located approximately 54 light years away in the constellation Cygnus.
The system is also known for LHS 482, Gliese 781, and Ross 1069b. It consists of three components: the Cool Red Star Wolf 1130a, the massive white dwarf Wolf 1130b, and the brown dwarf Wolf 1130c.
Initially discovered in 2013, Wolf 1130c orbits the closely bound systems of Wolf 1130a and Wolf 1130b on a wide trajectory.
“The astronomical initiative known as the Ancient Arcana concentrates on ancient, metal-rich brown dwarfs to enhance our understanding of atmospheric chemistry,” stated Adam Burgasser, a professor at the University of California, San Diego.
“Identifying phosphine was one of our primary objectives.”
Phosphine naturally emerges in the hydrogen-dominated atmospheres of gas giants like Jupiter and Saturn.
This has led scientists to theorize that phosphine should exist in the atmospheres of exoplanetary gas giants as well.
Nevertheless, previous Webb observations often failed to detect phosphines, pointing to an incomplete understanding of phosphorus chemistry.
“Before Webb, the expectation was that phosphine would be plentiful in planetary and brown dwarf atmospheres, according to theoretical models based on the turbulent mixing in these environments.”
Wolf 1130c is of particular interest to brown dwarf astronomers due to its lower concentration of “metals” (elements beyond hydrogen and helium) compared to the Sun.
In contrast to other brown dwarfs, the team successfully detected phosphines in the infrared spectral data collected by Webb from Wolf 1130c.
To accurately interpret their findings, researchers needed to ascertain the abundance of this gas within the atmosphere of Wolf 1130c.
“We employed a modeling approach called atmospheric recovery to quantify the molecular constituents of Wolf 1130c,” explained Dr. Irene Gonzalez from San Francisco State University.
“This technique leverages Webb’s data to validate the expected presence of various molecular gas species in the atmosphere.”
“It’s akin to reverse-engineering a delicious cookie when a chef remains committed to a recipe.”
“Typically, phosphorus may bond with other molecules, such as phosphorus trioxide,” remarked Dr. Baylor.
“In the metal-poor atmosphere of Wolf 1130c, insufficient oxygen prevents phosphorus from forming this way, allowing it to arise from phosphine-rich hydrogen.”
Alternatively, the phosphine could have been synthesized locally within the Wolf 1130ABC system, particularly from the white dwarf Wolf 1130b.
“The white dwarf represents the remnant shell of a star that has completed hydrogen fusion,” Professor Burgasser explained.
“These stars are incredibly dense and can accumulate material on their surfaces, potentially spurring runaway nuclear reactions.”
While astronomers have not observed such phenomena in the Wolf 1130ABC system in recent history, nova events usually cycle every thousands to tens of thousands of years.
This system has been recognized for just a century, and earlier invisible explosions may have contributed to a legacy of phosphorus contamination.
Gaining insights into why this particular brown dwarf exhibits a distinct signature of phosphine could shed new light on phosphorus synthesis in the Milky Way and atmospheric chemistry on exoplanets.
“If we aim to use this molecule in the quest for life in terrestrial worlds outside our solar system, understanding the atmospheric phosphine chemistry of brown dwarfs becomes crucial,” Professor Burgasser commented.
This study will be published in the journal Science.
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Adam J. Burgasser et al. Observation of unexpected phosphines in the atmosphere of the cold brown dwarf. Science. Released online on October 2, 2025. doi:10.1126/science.adu0401
Approximately 12,000 years ago, during the Pleistocene-Chlorocene transition, humans navigated a network of seasonal waters in Northern Arabia, marking significant locations with camels, ibex, wild equids, gazelles, and monumental rock carvings of Auloc, as well as establishing access routes.
Jebel Arnaan rock art panel. Image credit: Mariaguanine.
As part of the Green Arabia Project, archaeologist Michael Petraglia from Griffith University and his team have uncovered over 60 rock art panels featuring 176 sculptures in three previously unexplored locations.
The sculptures predominantly illustrate camels, ibex, equids, gazelles, and aurochs, comprising 130 life-size and naturalistic figures, with heights exceeding 3 meters and 2 meters.
This sculptural activity occurred between 12,800 and 11,400 years ago, a time when seasonal water bodies re-emerged following a period of severe aridity.
These water sources, identified through sediment analysis, facilitated early human migration into the interior desert and offered rare survival opportunities.
“These large-scale sculptures are not just rock art; they likely represent assertions of existence, access, and cultural identity,” noted Dr. Maria Guanine, an archaeologist at the Max Planck Institute.
“Rock art signifies water sources and movement routes, potentially indicating territorial rights and intergenerational memory,” added Dr. Seri Shipton, an archaeologist at the University of London.
In contrast to previously known sites where sculptures were hidden in crevices, the Jebel Mleiha and Jebel Arnaan panels were carved on the face of a towering 39-meter cliff, making them visually dominant.
One panel required ancient artists to ascend narrow ledges to create their work, emphasizing the effort and significance attributed to the imagery.
Various artifacts, including Levantine-style Erkiam, Hellwan stone points, green pigments, and dental beads, indicate extensive connections to pre-Pottery Neolithic (PPN) populations in the Levant.
Nevertheless, the size, content, and arrangement of these Arabian sculptures distinguish them from others.
“This unique form of symbolic representation reflects a distinct cultural identity evolved to thrive in harsh, arid environments,” stated Dr. Faisal Al Ghibrien, a heritage researcher at the Saudi Ministry of Culture.
“The project’s interdisciplinary approach aims to bridge significant gaps in the Northern Arabian archaeological record between the last Glacial Maximum and the Holocene, shedding light on the resilience and innovation of early desert communities,” remarked Dr. Petraglia.
The team’s paper has been published in the journal Nature Communications.
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M. Guanine et al. 2025. Monumental rock art indicates that humans thrived in the Arabian desert during the Pleistocene and Holocene transitions. Nature Communications 16, 8249; doi:10.1038/s41467-025-63417-y
Researchers from MIT and other institutions have discovered chemical fossils possibly left by ancient sponges on rocks dating back over 541 million years. These fossils consist of a distinctive type of sterlan, a stable variant of sterols found within the cell membranes of complex organisms. The team linked these sterlans to a category of sea sponges known as demosponges.
It highlights the picture representation of the ancient Stellan timeline, highlighting important compounds and their possible biological sources. Image credit: Shawar et al. , doi: 10.1073/pnas.2503009122.
“While I cannot precisely describe what these creatures looked like, I can assert they inhabited the ocean, had soft bodies, and likely lacked a silica skeleton,” stated MIT professor Roger Sammons.
In 2009, the researcher discovered the first chemical fossil believed to have originated from ancient sponges.
The team examined rock samples from outcrops in Oman and found an abundant sterlan they deduced to be a remnant of 30 carbon (C30) sterols—a rare steroid form attributed to ancient sea sponges.
Stellan was identified in very old rocks formed during the Ediacaran era (635-541 million years ago).
This era preceded the Cambrian period, which was marked by a sudden global explosion of complex, multicellular life forms.
The findings imply that ancient sponges may have existed far earlier than most multicellular organisms, potentially being one of the first animals on Earth.
Nevertheless, following the publication of these findings, alternative hypotheses emerged regarding the origin of C30 sterlan, suggesting that these chemicals could arise from other biological sources or non-organic geological processes.
The current study bolsters the initial hypothesis that ancient sponges produced this chemical record, as the researchers found new chemical fossils within the same promelat rock that were almost certainly biogenic.
Similar to previous studies, they searched for chemical fossils in rocks dating back to the Ediacaran period.
Samples were collected from drill cores and outcrops in Oman, West India, and Siberia, with analyses focused on the signatures of geologically stable sterols present in all eukaryotes (including plants, animals, and organisms with nuclear membranes).
“Without sterols or comparable membrane lipids, you cannot be classified as a eukaryote,” Professor Sammons remarked.
The chemical fossil identified in 2009 was 30-carbon sterols.
Additionally, the team deduced that these compounds could be synthesized due to distinct enzymes encoded by genes prevalent in demosponges.
“Finding sterols with 30 carbons is quite rare,” noted Dr. Lubna Shawar, a researcher at Caltech.
In this study, scientists concentrated on the chemistry of these compounds, observing that genes from the same sponge can produce even scarcer sterols with 31 carbon atoms (C31).
Upon analyzing rock samples of C31 sterlan, they discovered it was rich in the aforementioned C30 sterlan.
“These unique sterlans have been present all along,” Dr. Shawar remarked.
“We had to inquire the right questions to uncover them and truly comprehend what they signify and their origin.”
The researchers additionally procured samples of modern demosponges to examine for C31 sterols.
They determined that it is indeed a biological precursor of C31 sterlan found in rocks, observed in several species of contemporary demosponges.
Going further, they chemically synthesized eight different C31 sterols as reference materials to verify chemical structures.
The molecules were subjected to conditions simulating how sterols transform during deposition, burial, and pressurization over millions of years.
They found that two sterol-only products closely matched the structure of C31 sterols located in ancient rock samples.
The evidence from both substances strongly indicates that these compounds were created by living organisms rather than random non-biological processes.
Moreover, these organisms are likely ancestors of demosponges and still possess the capability to produce this set of compounds.
“It’s a blend of what’s present in the rock, what’s within the sponge, and what’s demonstrated in the lab,” explained Professor Sammons.
“Three supportive and concordant pieces of evidence strongly suggest these sponges are among Earth’s earliest animals.”
“This study illustrates how to authenticate biomarkers and confirm that the signals arise from life forms rather than contamination or abiogenic chemistry,” Dr. Shawar stated.
New Results were published this week in Proceedings of the National Academy of Sciences.
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Lubuna Shawar et al. 2025. Chemical characterization of C31 sterols from the sponge and Neoproterozoic fossil star counterpart. PNAS 22 (41): E2503009122; doi: 10.1073/pnas.2503009122
Life-sized camel engraving at Jebel Misma, Saudi Arabia
Sahout Rock Art and Archeology Project
The ancient people of the Arabian Desert left behind impressive rock art, including a large depiction of a camel, likely marking a water source.
Michael Petraglia, from Griffith University in Brisbane, along with his team, uncovered 176 sculptures across 62 panels in the Nehod Desert of Saudi Arabia in 2023. This collection includes not only life-size camel images but also 15 smaller camel sculptures and two camel footprints.
One particular rock art site featured a 3-meter-high dromedary located over 40 meters high on a cliff, making it impossible for the research team to safely access it without using a drone.
“Creating these sculptures must have been perilous,” Petraglia remarked. “Reaching that height was unfeasible.”
Besides camels, the rock art also illustrates other large animals such as ibex, horses, gazelles, and aurochs, highlighting what must have been a once mild climate. The team also uncovered carved human figures and masks.
“This isn’t merely about inscribing or altering the landscape,” Petraglia emphasizes. “These sculptures hold significant cultural value.”
Researchers propose that these images may have served as warnings to outsiders about the land’s occupation or indicated temporary water sources. Such findings contribute to the understanding of the extensive prehistoric habitation of Saudi Arabia.
Natural varnishes forming over the sculpture suggest it has aged for about 8,000 years. However, since the artwork itself couldn’t be dated directly, the team excavated sediments beneath the rock art panel.
Excavation site and discovery of sculpture tools beneath Jebel Arnaan’s rock art panel
Sahout Rock Art and Archaeology Project
There, the team found stone points, beads, and objects linking back to the late Neolithic people of the Levant, as well as tools that were likely used for sculpting. These artifacts date back around 12,800 to 11,400 years.
Excavations also took place near a small temporary lake called Playa, which ancient people would have depended on. Evidence from sediment and pollen confirms that this area was once far more verdant and hospitable.
Nonetheless, Petraglia believes the environment remains harsh, making it unlikely that people could establish permanent settlements in the area.
“These were likely transient communities, showcasing innovation,” he notes. “These were adept hunter-gatherers, far from mere survivalists.”
Cairo and Alexandria: Scientific Innovators of the Ancient World
Prepare for an unforgettable adventure in Cairo and Alexandria, Egypt’s two most legendary cities where ancient history intertwines with modern allure.
An international team of astronomers, as part of the Widefield Askap L-Band Legacy All-Sky Survey (Wallaby), observed DDO 137 (Wallaby J123424+062511). Their findings uncovered a vast bridge of neutral hydrogen, measuring 185,000 light-years, connecting the two galaxies, along with various arms and clouds that link to a longer gas tail (1.6 million light-years) previously identified by the Arecibo telescope.
Radio (left) and light (right) images of NGC 4532/DDO 137. Image credits: ICRAR/D. Lang, Perimeter Institute.
“This discovery marks a significant advance in our understanding of galaxy interactions,” stated Professor Lister Starley Smith from the University of Western Australia Node at the International Centre for Radio Astronomy Research (ICRAR).
“Our simulations indicate that the tidal forces between these galaxies play a crucial role in the observed gas dynamics in close vicinity to the massive Virgo clusters of galaxies.”
“As the galaxies approached the hot gas clouds surrounding the Virgo clusters—temperatures 200 times that of the sun—we experienced what is termed RAM pressure, resulting in gas being stripped away from the galaxy.”
“This phenomenon is analogous to atmospheric burn-up when a satellite reenters Earth’s upper atmosphere, albeit extended over a billion years.”
“The electron density and the velocity at which galaxies descend into these hot gas clouds sufficiently clarify why they were drawn from the galaxy toward the bridge and surrounding regions.”
This observation formed part of the Wallaby Survey, a comprehensive project aimed at mapping the sky and examining the hydrogen gas distribution across galaxies using CSIRO’s Askap Radio telescope.
“Neutral hydrogen is vital for star formation, making this discovery pivotal in understanding how galaxies interact and evolve, particularly in densely packed environments,” remarked Professor Kenji Bekki of ICRAR.
“This system exhibits striking similarities to our Milky Way and Magellanic Clouds, offering a unique opportunity for a detailed examination of such interactions,” noted Professor Stavely-Smith.
“Grasping the dynamics of these gas bridges is crucial for understanding galaxy evolution over time, the redistribution of galactic gases, and the various conditions impacting star formation within galaxies.”
“This enhances our overall understanding of the universe’s largest structures and their lifecycle.
result will be published in Monthly Notices from the Royal Astronomical Society.
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L. Stavely-Smith et al. 2025. WallabyPilot Survey: Extensive interaction between NGC 4532 and DDO 137 and Virgo clusters. mnras 543(1): 526-539; doi: 10.1093/mnras/staf1443
We may finally understand what caused the inner core of the Earth to freeze.
The inner core is a sphere of iron approximately 2,400 km (1,500 miles) in diameter, enveloped by a molten outer core. Its growth is responsible for generating the Earth’s magnetic field, which shields the planet from harmful solar radiation. However, the precise process by which the core first crystallized has remained unclear.
Recent research published in Nature Communications suggests a mechanism that hinges on deep Earth chemistry. By utilizing advanced computer simulations, scientists examined how various factors influence the freezing of iron under extreme pressure and temperature at the planet’s center.
They found that incorporating carbon allows iron to solidify under realistic conditions, positioning it as a key component in understanding the ingredients that contributed to the formation of the inner core billions of years ago.
“By investigating how Earth’s inner core formed, we gain insights not only into the planet’s history,” said Dr. Alfred Wilson from the University of Leeds, who led the study.
“We get rare insights into the chemistry of a region that we can never physically reach, and we can only speculate on how it might change in the future.”
The inner core lies deep within the planet, beneath layers of rock and magma – Credit: Getty Images/EPS Vector
At the extreme pressures found 5,000 km beneath our feet, iron doesn’t simply freeze when it drops below its melting point; it requires “super-cooling” of the crystals before they form. Pure iron must be cooled to as low as 1,000°C (1832°F), resulting in a significantly larger core than the one we see today.
New computer modeling indicates that the presence of carbon alters this equation. With less than 4% carbon in the mix, iron can crystallize at much lower temperatures, producing a core that aligns with seismic observations.
Scientists believe that the Earth’s center likely continues to host a mixture of elements. However, this research firmly highlights the critical role of carbon in one of geology’s greatest mysteries.
Researchers have uncovered the most ancient and well-preserved fossils of Pachycephalosaur, a category of dinosaurs distinguished by their domed skulls in Mongolia. A new study was released in the journal Nature on Wednesday.
The fossils, estimated to be between 108 and 105 million years old, belong to a juvenile of an unidentified species, referred to by scientists as Zavasepharelinpoche.
This discovery took place in the Klen Duk Formation in Mongolia’s Gobi Desert, located between China and Russia, and was led by paleontologist Tsogtbaatar Chinzorig from the Mongolian Academy of Sciences.
There is limited knowledge about these two-legged herbivores from the Cretaceous period, particularly in North America, but they are considered one of the “most enigmatic” dinosaur groups, according to the study. Their unique bone structures and representations in media like Jurassic Park have made them quite popular.
Previous finds of Pachycephalosaur fossils were largely restricted to skulls.
“You could fit all Pachycephalosaurus [fossils] known worldwide into two bathtubs, more or less. There are very few fossil examples,” remarked Michael Pittman, a paleontologist at China University in Hong Kong, in an interview with NBC News.
Fossilized skull of a dome-headed dinosaur from the Cretaceous period. Alessandro Chiarenza / Via Reuters
The Mongolian discoveries are considered “most skeletally complete,” providing greater insight into the anatomy of Pachycephalosaurus than previously available.
The individuals identified as Zavasephale were at least two years old and measured approximately three feet in length. More than half of its skeleton has been recovered, featuring long legs, short arms, small hands, and gastroliths, or stones ingested to aid in digesting vegetation.
Though these animals were not fully grown, their skeletons showed already thickened bones above the skull.
The integrity of the fossils “will be a key specimen for understanding how the cranial dome of Pachycephalosaurus evolved,” said Chinzorig, based on insights from the National Museum of History in London.
Scientists have proposed that Pachycephalosaurus may have engaged in head-butting behavior or used their domes to attract mates, though the precise function of the dome is still undetermined.
These fossils are approximately 15 million years older than previously found Pachycephalosaurus specimens, enhancing our understanding of dinosaur evolution.
“This is the oldest variety we’ve encountered, thus providing insight into what earlier species looked like and how they evolved over time,” stated Pittman. “The discovery of earlier specimens indicates that they have possessed this dome for quite a while.”
Zavasephale was smaller than later species of Pachycephalosaurs, growing to an estimated length of about 14 feet.
Collection of Stone Tools from Milovice IV Archaeological Site
Martin Novak
The discovered series of stone tools in the Czech Republic appears to belong to hunter-gatherers who roamed the area roughly 30,000 years ago. Among the 29 artifacts, which include blades and points used for hunting, skinning, and cutting wood, researchers gain rare insights into the daily lives of ancient hunters, as noted by Dominik Chlachula from the Chekoa Academy of Sciences in Brno.
The investigation began in 2009 when a village road collapsed in the Pavlovskövurky Mountains, revealing an old cellar. By 2021, archaeologists uncovered a deeper site known as Mirovice IV, which yielded charcoal dating back approximately 29,550-30,550 years. Here, researchers found horse and reindeer bones, along with a collection of stone tools that seemed to have been preserved in leather pouches over time, although the material has since decayed.
The tools exhibited significant wear, according to Chlachula. Most blades showed signs of extensive cutting, while several had holes near the handle. Some points displayed fractures or microscopic damage, indicating their use as spear or arrow tips.
Certain pieces appear to have been repurposed from older tools, hinting at the scarcity of quality stones or indicating that hunters aimed to conserve their resources, he adds.
Further examinations revealed that around two-thirds of the tools were made from glacial sediment stones originating from at least 130 kilometers away in the north, a considerable distance, particularly when traversing winding routes. The remaining tools seemed to come from western Slovakia, roughly 100 kilometers southeast. It’s still uncertain whether the owner procured the stones directly or through trade networks.
Many of the artifacts were too damaged to be usable, Chlachula explains. Nevertheless, hunters may have chosen to keep them for their sentimental value.
Neanderthals, Ancient Humans, Cave Art: France
Join new scientist Kate Douglas as she embarks on an enchanting voyage through time, exploring significant Neanderthal and Upper Paleolithic sites across southern France, from Bordeaux to Montpellier.
Research utilizing ancient DNA has shed light on the complex evolutionary ties and ecological responses of elephants and their relatives. In a recent study, scientists sequenced the mitochondrial genomes of various mastodons, including five specimens from Nova Scotia and the East Coast—one dating back approximately 500,000 years—as well as a unique specimen of Pacific Mastodon from Chulatin, Oregon, and a partial mitochondrial genome from North Ontario. Their findings indicate that Pacific mastodons belong to distinct and deep mitochondrial lineages, indicating this species’ range extended into western Canada and potentially even Mexico. Additionally, the authors discovered evidence of at least three separate expansions into the northeastern coastal region and identified two new groups of mastodons with clear, geographically coinciding specimens.
Adult Mastodon (Mammuthus sp.) consumes spruce branches, set against a backdrop that suggests periodic continental migrations related to climate change. During the Middle and Late Pleistocene, at least two types of mastodons roamed North America: the American mastodon, spanning from the East Coast to central regions, and the Pacific mastodon, found from central Alberta to central California. Image credit: Kathryn Kilukki.
Recent classifications have been updated to potentially recognize at least two distinct species: American mastodon and Pacific mastodon (Mammut pacificus), with ongoing debates regarding their division.
Genetic analyses confirmed that Pacific mastodons are ancient and belong to separate genetic lineages that extend further than previously thought.
Notably, Alberta emerged as a “hotspot” where Pacific and American mastodons may have gathered, expanding northward and hybridizing.
Samples collected from the East Coast and northern Ontario revealed two genetically distinct groups, referred to as mastodon clades, cohabiting the same geographic area.
Surprisingly, the eastern species exhibit significant diversity, reflecting at least three distinct waves of migration. This pattern is driven by repeated climatic warming events that opened new areas for glacial retreat and northward movement.
As temperatures decreased and glaciers expanded, mastodons were either forced southward or faced local extinction.
“The data reframes our understanding of the modern regions known as Alberta and the North, highlighting their role as migratory corridors for surrounding fauna,” the researchers noted.
Moreover, a unique and genetically distinct lineage of Mexican mastodon was identified, possibly representing a deeper evolutionary branch of the Pacific mastodon or even a brand-new third species.
During the Ice Age, the mastodon was among the largest terrestrial animals on the planet, traversing a range from Beringia (now Alaska and Yukon) through Nova Scotia and south to Central Mexico.
These creatures primarily foraged in wetlands, consuming shrubs and branches, and inhabited environments quite different from those of their well-known distant relatives, the woolly mammoths.
“This study marks significant milestones, including advancements in our understanding of the Pacific Mastodon,” stated Emil Kalpinski, a researcher at Harvard Medical School.
“It also raises numerous intriguing questions: How did these distant mastodon species interact within Alberta?”
“Did they compete for resources or, as our lab’s earlier research indicated for mammoths, engage in breeding?”
“These revelations, in conjunction with findings from our 2020 study, enrich our understanding of how mastodons migrated and diversified across North America, aiding contemporary conservation efforts in preparing for ongoing climate change and migratory species in the North,” the researchers concluded.
Their paper was published on September 12, 2025, in the journal Advances in Science.
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Emil Kalpinski et al. 2025. Repeated climate-driven dispersion and speciation in peripheral populations of Pleistocene mastodon. Advances in Science 11 (37); doi:10.1126/sciadv.adw2240
NASA’s diligent rover has been investigating and sampling igneous fields and sedimentary rocks within the Ezero Crater, providing insights into the geological processes and intriguing characteristics of early Mars, while also searching for potential biological signatures. Upon entering Neretvavalis, on the western edge of Jezero Crater, the rover examined the distinct mudstone and con rock outcrops of the Bright Angel formation. A new paper published in the journal Nature details extensive geological, petrological, and geochemical studies of these rocks.
The impression of this artist shows how Mars looked about 4 billion years ago. Image credit: M. Kornmesser/ESO.
“Upon the rover’s arrival at the Bright Angel formation and while analyzing the local rocks’ composition, our team was notably surprised by their distinctiveness compared to previous findings,” stated Dr. Michael Tice, a geoscientist and astrobiologist at Texas A&M University.
“These findings offer evidence of chemical cycling that organisms on Earth can utilize to harness energy.”
“As we delved deeper, we observed phenomena that could easily be attributed to early Martian life, yet remain challenging to rationalize purely through geological processes.”
“Living organisms conduct chemistry that is naturally prevalent, provided there’s sufficient time and suitable conditions.”
“To optimize our understanding, the chemistry leading to these rocks necessitates either elevated temperatures or biological involvement, and we find no signs of high temperatures here.”
“Nonetheless, these results warrant experimentation and eventually lab studies of the samples collected to completely rule out non-biological explanations.”
The Bright Angel layer comprises mudstone (fine-grained sedimentary rocks composed of silt and clay) and water-laid sedimentary rocks featuring layered beds indicative of a lively environment with flowing rivers and stagnant water.
Employing various instruments from Perseverance, such as Sherloc and PIXL spectrometers, scientists identified organic molecules and small mineral arrangements likely formed through chemical processes related to redox reactions and electron transfers. On Earth, these processes are frequently driven by biological activities.
The most notable characteristics include small nodules and “reaction fronts” – referred to as “poppy seeds” and “leopard spots” by the rover team – consisting of iron phosphate (likely vivianite) and iron sulfide (probably greygeite).
These minerals typically arise in cold, water-laden settings and are frequently associated with microbial metabolism.
“The structural arrangement suggests that they formed through the redox cycling of iron and sulfur along with associated minerals,” Dr. Tice commented.
“On Earth, such formations often occur in sediments where microorganisms consume organic material and ‘breathe’ rust and sulfate. “
“Their existence on Mars provokes an intriguing question: Could a similar process have occurred there?”
The artist’s concept depicts the perseverance of NASA’s Mars Rover on the surface of the red planet. Image credit: NASA/JPL-Caltech.
The Sherloc instrument identified a Raman spectral feature known as the G-band, indicating the presence of organic carbon, in certain Bright Angel rocks.
The most substantial signal originated from a location called Apollo Temple, which exhibited high concentrations of both Vivianite and Greygeite.
“The concurrent presence of this organic matter and redox-sensitive minerals is quite compelling,” Dr. Tice noted.
“This implies that organic molecules might have facilitated the chemical reactions responsible for forming these minerals.”
“It’s crucial to recognize that ‘organic’ doesn’t invariably imply life creation.”
“This suggests the presence of numerous carbon-carbon bonds.”
“Alternative processes can yield organic compounds without biological involvement. The organic compounds identified here could have been synthesized either by or as a result of biological activity.”
“If they originated from an organism, decomposition through chemical reactions, radiation, or heat would have been required to yield the G-band we observe today.”
This research outlines two potential scenarios: Firstly, these reactions might be abiotic (driven by geochemical mechanisms) while microorganisms, similar to those on Earth, could have influenced these reactions.
Interestingly, although some features of the nodules and reaction fronts can be produced by non-biological reactions between organic matter and iron, established geochemical processes that can generate sulfur-related features tend to require relatively high temperatures.
“Every observation we’ve made regarding these rocks indicates that they haven’t been subjected to heat capable of producing leopard spots and poppy seeds,” Dr. Tice remarked.
“If that’s accurate, we must genuinely contemplate the possibility that such formations were created by bacteria-like life forms existing in the Martian lake sediments over 300 million years ago.”
Views of Perseverance path through Neretva Vallis and the formation of Bright Angels. Image credit: Hurowitz et al., doi: 10.1038/s41586-025-09413-0.
The research team underscores that while the evidence is not definitive proof of past life, the findings align with NASA’s criteria for potential biosignatures. This characteristic paves the way for further inquiries to ascertain the biological or non-biological origins.
Perseverance has collected core samples from a Bright Angel layer named Sapphire Canyon, which are currently housed in sealed tubes onboard the rover.
This sample is prioritized for future return to Earth in a prospective mission.
“Once we return this sample to Earth, we can investigate it using far more sensitive instruments than those we can deploy on Mars,” Dr. Tice explained.
“We could analyze the isotopic composition of organic materials, fine mineralogy, and conduct searches for microfossils if they exist.”
“More tests can also help determine the maximum temperatures these rocks were subjected to, and whether high-temperature geochemical processes are the most plausible explanations for any potential biological signatures.”
“The similarities between processes on Mars and Earth are indeed remarkable. However, there’s one crucial distinction.”
“It’s fascinating to note that life employs some of the same processes on both planets around the same epochs.”
“We observe signs of microorganisms in Earth’s rocks of similar ages where iron and sulfur interact with organic matter in comparable ways, but we don’t encounter the exact features seen in Mars’ ancient stones.”
Due to tectonic activities, the majority of Earth’s rocks have been altered significantly, making it unique and spectacular to witness this phenomenon on another planet.”
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Ja Hurowitz et al. 2025. Redox-driven minerals and organic associations at Jezero Crater, Mars. Nature 645, 332-340; doi:10.1038/s41586-025-09413-0
This article is based on a press release provided by Texas A&M University.
Utilizing data gathered by NSF’s Gemini South Telescope and NASA/ESA/CSA James Webb Space Telescope, astronomers have identified methane signatures (CH4), water (H2O), and silane (SiH4) in the cold brown dwarf gas WISEA J153429.75-104303.3 (shortened to W1534). Silanes are predicted to act as significant reservoirs of silicon, the element responsible for the large clouds of gas that surround giant worlds, but their presence had remained undetected until now, masked by the development of deep silicate clouds in the observable atmosphere.
This artist’s illustration depicts a brown dwarf with an atmosphere filled with gas and dust clouds. Image credits: Noirlab/NSF/Aura/R. Proctor.
The W1534, referred to as the accident, is situated approximately 50 light years from Earth in the Libra constellation.
This brown dwarf was likely formed between 100 and 120 billion years ago and ranks among the oldest brown dwarfs discovered to date.
First identified in 2020 by citizen scientists participating in the Backyard Worlds: Planet 9 Citizen Science Project, its unusual light profile captivated astronomers.
Using two of the world’s most advanced terrestrial and space-based telescopes, astronomers examined its atmosphere to analyze its properties and composition.
The survey commenced with NSF’s Noirlab Astronomer Sandy Leggett capturing near-infrared images of W1534 with a Gemini South telescope in Chile, part of the International Gemini Observatory.
This initial work laid the groundwork for further explorations using Webb, guided by Noirlab Astronomer Aaron Meisner.
“W1534 is quite faint, and Gemini South is the only ground-based telescope capable of detecting it,” Dr. Meisner stated.
“The Gemini discovery paved the way for Webb’s observations by revealing the deeper atmospheric layers of this mysterious object and enabling us to determine the exposure time necessary to gather useful near-infrared data on its composition.”
Within W1534’s atmosphere, the team uncovered the crucial signature of silane, a compound formed from silicon and four hydrogen atoms.
Planetary scientists have long theorized the existence of this molecule within gas giants, attributing potential significance to its role in cloud formation within the atmosphere.
Despite extensive searches, its atmospheric presence has remained elusive in our solar system’s gas giants, Jupiter and Saturn, although thousands of studies on brown dwarfs and gas giants orbiting other stars have occurred.
This marks the first discovery of silanes in any brown dwarf, exoplanet, or solar system object.
The absence of this molecule in all but one singular brown dwarf suggests intriguing insights into the chemistry occurring in such an ancient environment.
“Often, it is these extreme objects that help us understand the average,” remarked Dr. Jackie Faherty, a researcher at the American Museum of Natural History.
The presence of silanes in W1534’s atmosphere implies that in very ancient objects, silicon is capable of bonding with hydrogen to form lighter molecules that can ascend to the upper layers of a gas giant’s atmosphere.
In contrast, more recently formed objects, such as Jupiter and Saturn, result in silicon bonding with readily available oxygen, producing heavier molecules that settle deeper into the atmospheric layers.
The evidence gleaned from W1534’s atmosphere further validates astronomers’ comprehension of gas giant cloud formation and sheds light on how primitive conditions influence atmospheric composition.
Moreover, it indicates that worlds formed billions of years ago display characteristics distinctly different from those formed during the early solar system.
“The formation and detection of silanes highlight an essential relationship among composition, cloud formation, and atmospheric mingling in cold brown dwarfs and planetary atmospheres,” the authors concluded.
Engraved face from the Amiens-Renancourt 1 site in France
Stephen Lancelot/In-Rap
Ancient miniature statues, dating back 27,000 years in northern France, may offer insights into how hunter-gatherers styled their hair.
Discovered in 2021 at the Amien Lannancoeur 1 site, located about 140 kilometers north of Paris, the findings have only recently been reported by researchers.
The statues feature long hair styled in a braided grid pattern, indicative of hair nets and intricate hairstyles. This contrasts with figures from Central and Eastern Europe, where hairstyles tend to be shorter and cover the head more extensively, according to Olivier Touse from the University of Liege, Belgium, who was not part of the research team.
The distinct hairstyles seen in these statuettes may represent local fashion trends. “This could highlight cultural specifics that are rarely expressed outside of these unique human portrayals,” states team member Clement Paris from the National Institute of Preventive Archaeology in France.
Radiocarbon dating of the Amiens-Renancourt 1 rock formations indicates that the figurine is approximately 27,000 years old, belonging to the Greybettian era, which spanned from 33,000 to 26,000 years ago across Europe. Following this period, the population of hunter-gatherers left northwest Europe for nearly 10,000 years due to the extreme cold and arid conditions of the last glacial maximum, explains Touzé.
“The elaborate hairstyles and decorative elements underscore the care put into crafting this statue,” remarks Gregory Abrams from the University of Ghent, Belgium, who was not involved in the study.
The excavation site also revealed various scrap fragments and over a dozen additional figurines, including Venus statuettes representing women. “This indicates active production of figurines at the site,” notes Touse.
Nevertheless, the significance of the statue remains elusive. “Prehistoric beliefs and myths leave scant evidence,” points out Paris. “Even when such statues are found, their meanings are often enigmatic.”
Neanderthals, ancient humans, cave art: France
Join new scientist Kate Douglas on a captivating journey through time as she uncovers the prominent Neanderthal and Upper Paleolithic sites of southern France, spanning from Bordeaux to Montpellier.
Engraved face from the French Amien Lannancourt 1 site
Stephen Lancelot/In-Rap
Miniature sculptures estimated to be 27,000 years old from northern France may offer insights into how ancient hunter-gatherers styled their hair.
The figurine was unearthed in 2021 from a site known as Amien Lannancoeur 1, located roughly 140 kilometers north of Paris, and has recently been analyzed by researchers.
Notably, the long hair appears to be braided in a grid pattern, possibly representing hair nets or distinct hairstyles. This contrasts with figures found in Central and Eastern Europe, where hairdos are typically short and cover the majority of the head, according to Olivier Touse from the University of Liège, Belgium, who did not participate in the study.
The statuette’s distinctive hairstyles may indicate the period and local fashion trends. “This might represent a cultural uniqueness that would not have been highlighted without these scarce human representations,” states team member Clement Paris from the National Institute of Preventive Archaeology in France.
Radiocarbon dating of the rock layers at Amiens-Renancourt 1 indicates that the sculpted figure dates back to approximately 27,000 years ago and belongs to the Greybettian period, which spanned from 33,000 to 26,000 years ago across Europe. Following this era, the hunter-gatherer population vacated Northwest Europe for nearly 10,000 years due to the severe cold and arid conditions of the last Ice Age’s peak, notes Touzé.
“The intricate decoration and well-defined hairstyles underline the attention devoted to the craftsmanship of this statue,” remarks Gregory Abrams at the University of Ghent, Belgium, who was not involved in the study.
Other excavations at the site have uncovered several small fragments and over a dozen additional figurines, including Venus figurines that depict women. “This site has historical significance regarding sculptural production,” states Touse.
Yet, questions linger about what these figurines reveal about their creators. “Prehistoric thoughts and myths leave minimal evidence,” comments Paris. “And even when these statues provide insight, their significance remains obscure.”
In a recent study, researchers examined the ancient microbial DNA of 483 mammoths, preserved for over a million years. This included 440 newly analyzed unpublished samples from Steppe Mammoths dating back 1.1 million years. Through metagenome screening, contaminant filtering, damage pattern analysis, and phylogenetic inference, they identified 310 microorganisms linked to various mammoth tissues.
Ginet et al. Partial genome reconstruction of erysipelothrix, representing the oldest confirmed host-related microbial DNA from the oldest mammoth samples. Image credit: Ginet et al., doi: 10.1016/j.cell.2025.08.003.
“Envision a mammoth tooth from a million years ago,” stated Dr. Benjamin Ginette, a postdoctoral researcher at Stockholm’s Paleogenetic Centre and the Swedish Museum of Natural History.
“Imagine if it still harbors traces of ancient microorganisms that existed alongside this mammoth?”
“Our findings push the boundaries of microbial DNA research beyond a million years, unlocking new avenues for understanding how host-associated microorganisms evolved in tandem with their hosts.”
The team discovered six microbial groups consistently linked to mammoth hosts, including relatives of Actinobacillus, Pasturella, Streptococcus, and erysipelothrix. Some of these microbes may have been pathogenic.
For instance, one Pasturella bacteria identified in this study is closely related to the pathogens responsible for a fatal outbreak among African elephants.
Given that African and Asian elephants are the closest living relatives of mammoths, these results raise concerns about whether mammoths could also be susceptible to similar infectious diseases.
Remarkably, scientists have reconstructed a partial genome of erysipelothrix from a Steppe Mammoth that lived 1.1 million years ago, marking the oldest known host-related microbial DNA ever recovered.
This advances our understanding of the interactions between ancient hosts and their microbiota.
“As microorganisms evolved rapidly, acquiring reliable DNA data spanning over a million years has felt like tracing a path that continually rewrites itself,” noted Dr. Tom van der Bark of the Paleobiological Centre and the Museum of Natural History in Sweden.
“Our discoveries illustrate that ancient artifacts can retain biological insights far beyond the host genome, offering a perspective on how microorganisms influenced Pleistocene ecosystem adaptation, disease, and extinction.”
Determining the exact impact of the identified microorganisms on mammoth health is challenging due to DNA degradation and limited comparative data, but this study provides an unparalleled view into the microbiota of extinct megafaunas.
The findings suggest that multiple microbial lines coexisted with mammoths for hundreds of thousands of years, spanning vast geographical areas and evolutionary timescales, from the extinction of woolly mammoths on Lengel Island over a million years ago to their decline around 4,000 years ago.
“This research opens a new chapter in understanding the biology of extinct species,” says Professor Love Darren, a researcher at the Swedish Museum of Natural History and the Paleogenetic Centre at Stockholm University.
“Not only can researchers study the mammoth genome itself, but they can also begin to explore the microbial communities that cohabited with it.”
This study was published this week in the journal Cell.
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Benjamin Ginet et al. Ancient host-related microorganisms recovered from mammoths. Cell published online on September 2, 2025. doi: 10.1016/j.cell.2025.08.003
Following the Cretaceous Mass Extinction, ancient penguin relatives rapidly diversified
Mark P. Witton/Science Photo Library
Four newly discovered fossil species in New Zealand demonstrate the significant diversity of early penguins, characterized by their long, dagger-like beaks for catching prey.
The latest findings provide “an unexpected insight into the early evolution of penguins,” states Gerald Mayle at the Senckenberg Research Institute in Germany.
The fossils were unearthed from the Waipara Greensand Formation in Canterbury, New Zealand, a region recognized for flourishing after the mass extinction that eradicated non-avian dinosaurs, preserving some of the early avian species that diversified.
“A notable aspect of ancient New Zealand is the lack of terrestrial predators, which enabled early penguins to lose their ability to fly,” explains Mayle. This absence of predators might also clarify why certain early penguins reached sizes as large as humans, he remarks.
In total, Mayr and colleagues detailed four new species, showcasing a remarkable variety of shapes and sizes. Many fossils reveal previously unknown skeletal characteristics; one specimen boasted an exceptionally long back toe, along with an incredibly intact skull and beak.
“Fossils with beaks that provide insight into avian diets are exceedingly rare among penguins from earlier epochs [23 million years ago],” says Tatsuro Ando, who was not part of the study at the Japanese Paleontology Museum.
Present-day penguins feature varied beak shapes tailored to their specific prey, which can include krill and small fish, as well as invertebrates like squid, Ando explains. While these beaks can be short, thick, or curved, they do not compare to those seen in early penguins.
“It appears that ancient penguins utilized their long beaks to grasp their prey,” says Mayle. After impaling the fish, they likely surfaced to toss it into the air and catch it, he adds.
Over a span of approximately 20 million years, penguins evolved to lose their elongated, slender beaks. This change was likely an adaptation to prolonged underwater periods. As they transitioned to a more aquatic lifestyle, their feeding strategies and beak structures also evolved.
The newfound fossils underscore the significance of New Zealand as a “cradle of penguin evolution,” remarked Mayle, indicating that the earliest penguins diversified and spread globally to regions including New Zealand, Antarctica, South Africa, and South America.
The latest study presents paleoenvironmental models indicating how tidal dynamics played a crucial role in the early evolution of Sumerian agriculture and sociopolitical intricacies.
Cylinder seal impression from the Uruk era circa 3100 BC. Image credit: Louvre Museum.
The earliest known network of city-states, intricately linked by common cultural practices and economic ties, emerged in southern Mesopotamia approximately 5,000 years ago.
The prosperity of this urban center, collectively referred to as Schmer, was fundamentally based on agriculture, supported by extensive irrigation systems.
The urbanization of Schmah, following the long-standing rural Ubaid culture, was part of a process that began at least prior to the millennium during the Uruk period (6,000-5,200 years ago).
The concurrent rise in population, innovation, and professional specialization during this time led to the formation of a state system with a complex economy, interlinking urban centers with their rural surroundings.
This “Sumerian takeoff” could not have happened in the challenging, arid tropical region between the Arabian and Iranian deserts without access to the perennial freshwater provided by the Euphrates and Tigris rivers.
However, questions remain about how, and when, labor-intensive large-scale irrigation became prevalent in the area, and how the abundance of water transformed into social prosperity.
“Our findings indicate that Sumer was literally built upon the rhythm of water, culturally,” states Dr. Lviv Giosan, a researcher at Woods Hole Marine Facilities.
“The cyclical tidal patterns and the morphodynamics of deltas—how landscapes evolve over time due to dynamic processes—were intricately woven into Sumerian mythology, innovation, and daily life.”
This research reveals that between 7,000 to 5,000 years ago, the Persian Gulf was expanding inland, with tides pushing freshwater into the lower Tigris and Euphrates twice daily.
Scholars propose that early communities harnessed this reliable hydrology through short canals to irrigate crops and cultivate dates, allowing for high-yield farming without the need for vast infrastructure.
As the river created a delta at the bay’s head, tidal access to the interior was obstructed.
The subsequent loss of tidal influence may have sparked ecological and economic crises, necessitating a significant social response.
The extensive efforts for irrigation and flood management that followed ultimately characterized Schmer’s golden age.
Dr. Reed Goodman, a researcher at Clemson University, remarked:
“The Mesopotamian delta was distinct. Its constantly shifting land spurred some of the earliest intensive agriculture in history and led to ambitious social experiments, driven by that restless land.”
In addition to environmental factors, this study also investigates the cultural impact of this aquatic foundation, linking Mesopotamia to the Sumerian pantheon’s flood myth.
“The key conclusions of this research highlight what we discovered in Ragash,” notes Dr. Holly Pittman, director of the Ragash Archaeology Project at the Penn Museum.
“Rapid environmental changes fueled inequality, political integration, and the ideology of the world’s first urban societies.”
Leveraging ancient environmental and landscape data, new samples from historic Ragash archaeological sites, and detailed satellite imagery, the authors reconstructed what Sumerian coasts may have looked like long ago and envisioned how its inhabitants adapted to their ever-changing environment.
“Our work underscores both the opportunities and risks associated with social transformation in response to significant environmental crises,” Dr. Giosan added.
“It is always fascinating to uncover genuine history hidden within mythology, and interdisciplinary research like ours plays a crucial role in revealing it.”
oThe most captivating trend in game design is NE’s approach of utilizing familiar mechanics and genres to delve into real power systems and challenge them. Future deck-building games are set to engage players interested in political activism. No compensation is guaranteed. Additionally, these games aim to educate players about Southeast Asian politics. Mythmatch, while appearing as a puzzle game rooted in ancient Greece, also offers a charming and accessible take on community-building and challenging capitalism.
You embody Artemis, the goddess of hunting, who must navigate the ingrained sexism of Mount Olympus, all while confronting a company encroached upon by the High Tech Brothers. In a rebellious spirit, she chooses to assist the people of Ithaca in constructing a new, more progressive world. You achieve this by traversing a compact environment and merging items with animals to forge new creatures and tools for aid. For instance, if you land on Earth, an accidental mishap could crush a tank belonging to the moon goddess Serene, prompting you to combine moon fragments to reconstruct the celestial vehicle. However, one shard may fall into a greenhouse, requiring you to solve a puzzle for access.
Ithaca…mythmatch. Photo: Team Artichoke
The game combines storytelling adventures, social simulation elements, and match-3 puzzles. “Ultimately, we’ve drawn more from automation games like Factorio, but here, automation happens through connections with NPCs rather than machinery construction,” explains Moo Yu, founder and creative director of Artichoke. “At Mount Olympus, we find inspiration in various arcade-style games, from money puzzle exchangers to Overcooked, and even Super Autopet.”
Featuring a diverse cast of characters and engaging scripts, the game emphasizes the importance of building friendships and creating supportive communities. “The theme of belonging really resonated with me,” Yu shares. “Having struggled with friendship and finding my community, I realized there weren’t many games addressing rejection and the quest for family, so I started with a concept that explored shifting goals and the perpetual rejection by the gods of Olympus.”
Team Artichoke, a small studio comprised of 10 staff members, most of whom are part-time, is led by Yu, a veteran previously with Media Molecule and Mind Candy, who co-developed bikes with Hit Adventure Knights. When asked about the key influences behind Mythmatch, he mentions three films: Kung Fu Panda, Amelie, and particularly Legally Blonde, the Reese Witherspoon comedy that, while visually styled as a rom-com, cleverly critiques the legal profession. “We aimed to build a caricature world that provides breathing space to tackle more serious topics,” he explains. “[On the surface, it’s cute, but there’s a gritty layer throughout.] So while the game may not literally resemble a Legally Blonde world, I aimed to encapsulate the atmosphere created by a vibrant color palette, ensuring there’s also a layer of complexity.”
Hence, Mythmatch employs a core gameplay loop found in casual genres like match-3 and merge games, but with a fundamental message around power and belonging. Yu views this blend as vital to the indie gaming landscape in 2025. “We aspire to develop a small game that melds fresh narratives and mechanics, showcasing how creative storytelling can thrive even with limited resources,” he states. “I hope funding constraints become less significant, yet I remain inspired by what creators can achieve with what they have at their disposal.”
Cow teeth dating back 5,000 years could provide new insights into the construction of Stonehenge.
Utilizing advanced isotopic analysis, researchers examined the jawbone, which was first discovered at the southern entrance of Stonehenge in 1924, a location of significant ritual importance.
The findings indicate that the cow spent its early years on terrain that existed more than 400 million years ago, beneath the massive stones.
“This is the first evidence linking the timing of the cow’s life to the movement of the bluestones, which are connected to both Wales and Stonehenge,” said Professor Jane Evans, the study’s lead author, in an interview with BBC Science Focus. “The insights from a single tooth tell a larger narrative than I had anticipated.”
The bluestones of Stonehenge are smaller standing stones that contrast with the larger Sarsen stones, which were transported over 200 km (125 miles) from the Preseli Hills in southwest Wales.
The journey of these stones remains one of archaeology’s great mysteries. Were they carried on sleds, floated down rivers, or perhaps moved with the assistance of animals?
Researchers sliced the teeth into nine layers, each capturing a chemical signal reflecting a brief period in the cow’s life.
Oxygen and carbon isotopes revealed a dietary transition over roughly six months, from stored winter feed to summer grazing. Strontium analysis indicated that the cow’s diet came from diverse geological sources, implying that either the cow moved to the food or vice versa.
However, the lead isotopes presented a more unexpected finding. Their makeup suggested the geological settings of Wales, while unusual spikes indicated that lead stored in the skeleton was released during pregnancy.
This lead would have been incorporated into the skeleton earlier in the cow’s life. In essence, while its life concluded at Stonehenge, it likely began in Wales, mirroring the journey of the stones.
Subsequent tests confirmed that the animal was female, and she may have been pregnant or nursing when the tooth section formed.
Together, these findings enhance our understanding of the logistics involved in transporting the massive stones of Stonehenge, weighing approximately 4.5 tons (5 tons) over several hundred kilometers.
Rather than just a group of men carrying stones, the existence of cows—potentially pregnant and possibly providing milk—suggests a larger community engaged in their transport.
“We may theorize that the cow could have been used to pull loads,” Evans noted. While this specific animal might not have moved stones, it indicates that Neolithic people potentially utilized “beast of burden” techniques in the region.
“This study offers important new perspectives on the life history of this remarkable cow, which was interred at a vital site at Stonehenge’s entrance,” said Richard McGwick, a co-author of the research and professor of archaeological sciences at Cardiff University.
“It reveals unprecedented details about the animal’s distant origins and its arduous journey. Although grand narratives dominate studies of significant archaeological sites, this focused biographical approach to a single animal introduces a fresh dimension to the story of Stonehenge.”
Evans mentioned that further investigations could be conducted on other animal remains found in and around the monument.
For now, this cow’s teeth provide compelling evidence that the journey of Stonehenge’s stones may have involved both animals and humans.
read more:
About our experts
Jane Evans is an honorary researcher and emeritus professor for the UK Geological Survey at the University of Leicester and the University of Nottingham. She is an isotopic geochemist specializing in isotopic system origins and their applications to archaeological dietary problems.
Archaeologists have performed the inaugural systematic, interdisciplinary examination of the structure, methods, and contents of 51 “Phoenician Oil Bottles” discovered on Motia Island, located off the western coast of Sicily, Italy. Their findings imply that these bottles were likely produced and filled in aromatic Phoenicia during the 8th to 6th centuries BCE and distributed throughout the Western Mediterranean.
A selection of ‘Phoenician Oil Bottles’ (750/740-550/530 BC) from Motia, Italy. Image credit: A. Orsingher.
The Phoenicians utilized aromatic substances in diverse manners. Often burned alongside ceramic, metal, or stone supports, these substances enhanced both indoor and outdoor environments, indicating the performance of various ritual practices.
Commonly depicted in Phoenician iconography are stereotypical images of smoke rising from fragrant burners before sacred figures and symbols.
Moreover, the ornamental or floral designs of the incense indicate a clear connection between scent and the function of the vessel.
Among the Phoenician ceramics linked to fragrant substances, a category of small, simple vessels known as “Phoenician oil bottles” is particularly noteworthy.
While not part of standard production, these jugs, dating from the 8th to 6th centuries BCE, typically feature narrow openings with thick, outwardly-rolled rims, a short, bulging neck that tapers, a single vertical handle, and spherical to oval bodies with either rounded or pointed bases.
Excluding notably large examples from the Teatrocomico of Cadiz, Phoenician oil bottles usually have a height of 11.5-14 cm with a maximum diameter of 8.5-10 cm until the mid-8th century BCE.
After this period, the height decreased to around 9.5 cm, the body shrank to approximately 6.5 cm, and handle sizes diminished, making them difficult to grasp.
These simple, slow-fired jugs have been unearthed from various settings across the Atlantic and Mediterranean regions, including graves, households, sanctified areas, pottery workshops, and shipwrecks, indicating their widespread use.
The small island in western Sicily, Italy, currently produces the highest quantity of these vessels.
“Their extensive distribution throughout the Mediterranean implies that these containers served multiple purposes,” states Dr. Adriano Orsinger, a researcher at CompCances University in Madrid and the Institute of Biblical Archaeology.
In a recent study, Dr. Orsingher and his team analyzed ceramic compositions to trace the origins of the “Phoenician oil bottles.”
Subsequent evaluations of organic residues within the vessels provided insights into their original contents and purposes.
The findings indicate that these bottles were produced in southern Phoenicia, specifically between present-day Beirut and the Carmel region.
Organic residues were found in eight of the 51 vessels, showing traces of plant-based lipids and pine and mastic resins, strong indicators of light oil formulations.
“Our research confirms that these ceramic vessels were employed to transport aromatic oils,” asserts Dr. Sylvia Amikorn, a researcher at the University of Tübingen.
“These oils were not mere commodities. They acted as cultural connectors and embodiments of identity during the Phoenician migration in the Mediterranean,” Dr. Orsingher remarked.
“By carrying familiar scents, they served as tools for memory, enhancing shared practices and olfactory experiences among dispersed communities.”
The Iron Age Mediterranean was characterized by intense mobility, trade, and cultural interconnections.
Phoenicians, celebrated as seafarers, traders, artisans, and settlers, played a pivotal role in this connectivity, establishing communities far from their Levantine homelands.
Central to Phoenician cultural practices was the production and utilization of aromatic substances, for both local consumption and export.
This study urges a reevaluation of historical transitions, trade, and cultural attributions experienced in the ancient world.
“Ancient mobility should be reconsidered not only as the movement of people and goods but as a cycle of sensory, olfactory, and memory traditions,” Dr. Orsingher emphasized.
“The significance of fragrance is intertwined with identity, making its role in migration, reconciliation, and cultural exchange often underestimated, yet crucial.”
“Our findings highlight the potential of interdisciplinary science to uncover the intangible aspects of antiquity,” Dr. Amikorn remarked.
“Investigating the contents and uses of these vessels offers a unique perspective on how scents connected life, landscapes, and identity in the ancient Mediterranean,” Dr. Ouger added.
“Innovative research methodologies continue to yield unexpected insights into the past,” proclaimed Carla Paulman, a professor at the University of Tübingen.
“This study demonstrates that even elusive evidence like ancient scents can be accessed through interdisciplinary approaches, opening new avenues into the ancient sensory and cultural realm.”
Survey results were published in Journal of Archaeological Method and Theory.
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A. Orsingher et al. 2025. Home scent: Motia’s Phoenician oil bottle. J Archaeol Method Theory 32, 59; doi:10.1007/s10816-025-09719-3
A collaborative team of paleontologists from New Zealand and Australia has identified a new, extinct species of Shelduck from Holocene fossil bone deposits located in the Likov Chatham Islands.
The artistic reconstruction of rēkohu Shelduck (Tadnarekov) highlights the dark feathers typical of island-dwelling birds. Image credit: Sasha Votyakova/Te Papa.
The rēkohushelduck (Tadnarekov) is a newly described species that inhabited the Chatham Islands, a remote archipelago situated 785 km east of the New Zealand mainland.
“The archipelago comprises Chatham Island, Rangihautepit, Mangere, Tapua, and various smaller islands,” explained the researchers.
“These islands were completely submerged during the late Miocene and early Pliocene epochs.”
“Subsequent geological activities resulted in their re-emergence roughly three million years ago.”
According to the research team, the ancestors of the Rēkohu Shelduck reached the Chatham Islands around 390,000 years ago, during the late Pleistocene.
“While this may seem like a brief period, it’s long enough to influence species development,” Dr. Lawrence noted.
“At that time, the Rēkohu Shelduck exhibited shorter, more robust wings and longer leg bones, adaptations that impacted flight capability.”
“These evolutionary changes resulted from various factors, such as ample food availability, a lack of ground predators, and windy conditions, making flight less necessary.”
“If you don’t use them, you lose them; wings start to diminish,” remarked Dr. Pascare Lube from University of Otago.
“Flying is energy-efficient, so if it’s not essential, why expend the effort?”
“More robust leg bones support increased muscle mass and strength for takeoff, which is crucial when wings are small.”
The researchers utilized ancient DNA analysis and bone morphology to characterize the rēkohushelduck, a cousin of the Paradise Shelduck (Tadorna variegata) native to New Zealand.
Rēkohu Shelduck spent a majority of its time on the ground and became extinct prior to the 19th century.
“The discovery of rēkohushelduck bones in early Moriori Midden deposits indicates that hunting likely contributed to its extinction prior to European contact and the subsequent Māori settlements in the 19th century,” the scientists reported.
Their study was published in the July 2025 issue of The Linnaean Society’s Journal of Zoology.
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Nicholas J. Lawrence et al. 2025. Ancient DNA and morphometrics reveal a new species of Shelduck, an extinct island inhabitant from the Rēkohu Chatham Islands. The Linnaean Society’s Journal of Zoology 204 (3): ZLAF069; doi: 10.1093/zoolinnean/zlaf069
A dramatic reconstruction of early modern Homo sapiens in Africa
BBC/BBC Studios
human Available on BBC iPlayer (UK); US PBS (September 17)
Based on my observations, science documentaries often fall into two categories, akin to French and Italian cuisines. (Hear me out before you judge that comparison.) The first category employs intricate techniques for a deep experience. The second is more straightforward, allowing the content to shine naturally.
Both documentary styles can yield impressive results in their own ways. human, a five-part BBC series exploring the roots of our genus, Homo, undoubtedly fits into the latter category. It weaves together compelling stories, stunning visuals, and the charismatic presence of paleontologist Ella Al Shamahi, inviting viewers to embark on a heartfelt journey through six million years of our human history. No flashy add-ons are necessary.
The first episode delves into complex inquiries. When exactly did our species emerge? Multiple perspectives yield varying answers. Was it 300,000 years ago when humans began to exhibit features resembling ours? Was it when our skulls, according to Al Shamahi, transformed to become softer and more spherical? Or, more poetically, when we developed remarkable traits like intricate language, abstract thought, and cooperative behavior?
“
The series intertwines fascinating narratives, stunning visuals, and the captivating presence of Ella Al Shamahi. “
It’s an engaging episode, particularly when the narrative shifts to other extinct human species. For instance, Al Shamahi’s exploration of Indonesia introduces us to Homo floresiensis, a meter-tall human uniquely adapted to life on Flores. The discovery of these “hobbits” in the Liang Bua Caves two decades ago reshaped our understanding of ancient human biology. Their small brains provide insights into tool use, with their long arms and short stature diverging from other human species.
Episode three highlights the fate of our most famous relative, the Neanderthals. As we spread into Europe and Asia, they adapted to colder climates but ultimately faced extinction.
Throughout the series, Al Shamahi showcases amazing paleontological discoveries made over recent decades (many of which you may have read about in New Scientist). For instance, rainbow feathers from birds like the red kite have garnered interest regarding their significance to Neanderthals. Meanwhile, the perikymata—a growth line in tooth enamel—affirms that H. sapiens experienced extended childhoods, leveraging our cognitive capacity.
Over just five episodes, human cannot cover every aspect of our evolutionary story. Yet, it illuminates how H. sapiens has been shaped by climate influences, the flora and fauna that provide for us, other human species, and collaborative nomadic groups that shared skills, knowledge, and DNA, allowing us to thrive and eventually build cities.
This dimension of H. sapiens portrays humanity as the ultimate survivor, capable of progression and dominance over the Earth. In contrast, human offers a more humble narrative, emphasizing our species alongside our ancient relatives.
Tracking Human Evolution Gain insights behind the scenes of the new BBC series human with Ella Al Shamahi on NewsCientist.com/Video
In a captivating and poignant narrative, Ella Al Shamahi addresses the inadequate frontline science conducted in regions perceived as inhospitable to Western researchers. Discover Neanderthal skeletons exhibiting severe disabilities unearthed in present-day Iraq—a striking reminder of the discoveries we’ve overlooked.
Bethan Ackerley is a sub-editor at New Scientist. She has a passion for science fiction, sitcoms, and all things eerie. Follow her on Twitter @inkerley
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Thousands of years ago, ancient Homo sapiens embarked on a perilous journey, traversing the icy expanses of the Bering Straits into the uncharted territories of the Americas. Recent research indicates that these migrants may have brought with them an extraordinary gift – MUC19 genes inherited from Denisovans, which could have played a pivotal role in helping humans adapt to the challenges of their new environments.
The concept of artist Peng Denisovan walking under the bright sun during the Pleistocene of Taiwan. Image credit: Cheng-Han Sun.
The modern human genome harbors a few archaic variants that are the remnants of past interbreeding events with Neanderthals and Denisovans.
While many of these variants are neutral, certain archaic mutations found in modern humans are believed to be targets of positive natural selection, possibly essential for human adaptation as they expanded into new lands.
The populations in the Americas encountered diverse environments, creating numerous opportunities for natural selection to favor archaic variations in these new settings.
This new research, spearheaded by a team from the University of Colorado, Boulder, and Brown University, focused on a gene known as MUC19, which aids in the production of proteins that form saliva and mucosal barriers in the respiratory and gastrointestinal tracts.
The researchers found that a Denisovan variant of MUC19 exists in the DNA of modern Latin Americans with Indigenous American ancestry, as well as in individuals excavated from archaeological sites across North and South America.
The prevalence of this gene in modern human populations suggests it was under significant natural selection, indicating that it conferred survival or reproductive advantages to those who carried it.
Although the specific benefits remain unclear, given the gene’s involvement in immune processes, it may have provided an enhanced defense against pathogens encountered by early settlers in the Americas.
“From an evolutionary perspective, this discovery illustrates how ancient interbreeding can produce effects that persist today,” stated Professor Emilia Fuerta Sanchez of Brown University.
“Biologically, it identifies genes that seem to be adaptable, though their precise functions are yet to be elucidated.”
“We hope this will spur further research into the actual roles of this gene.”
Limited information exists about Denisovans, who inhabited Asia between 300,000 and 30,000 years ago, with our knowledge primarily derived from small fossils found in Denisova Cave, two jawbones discovered in Tibet and Taiwan, and an almost complete skull unearthed in China this year.
Fossils from Siberian fingers contained ancient DNA, facilitating the search for genetic similarities between Denisovans and modern humans.
Previous studies have indicated that the Denisovan-derived gene EPAS1 may have contributed to the remarkable adaptations of Sherpas and other Tibetans.
In the current study, researchers compared Denisovan DNA with the most recent genomes obtained from the 1,000 Genomes Project, a global study on genetic variations.
They found that Denisovan-derived MUC19 variants are prevalent among Latino populations with Indigenous American ancestry.
The researchers also investigated DNA from 23 individuals excavated from archaeological sites in Alaska, California, Mexico, and other parts of the Americas, finding that Denisovan-derived variants were also common in these ancient peoples.
The authors conducted several independent statistical tests demonstrating that Denisovan MUC19 genetic mutations have reached unusually high frequencies in both ancient indigenous populations and present-day indigenous peoples, indicating genes that are situated on long stretches of archaic DNA.
They also revealed that the gene likely crossed over from Denisovans to another archaic population.
“These findings reveal that past interbreeding has introduced new and potentially advantageous genetic variations into human lineages,” Professor Fuerta Sanchez remarked.
“New genetic variations typically arise through slow evolutionary processes.”
“However, these interbreeding events were a sudden means of introducing a plethora of new variations.”
“In this instance, the novel genetic reservoir seems to have aided modern humans migrating to the Americas and may have bolstered their immune systems.”
“Clearly, this gene was advantageous for these populations.”
“We hope that recognizing the significance of these genes will inspire new investigations into their functions to uncover fresh biological mechanisms, particularly relating to coding genetic variants that modify protein sequences.”
Fernando A. Villania et al. 2025 MUC19 Genes: The evolutionary history of recurrent variants and natural selection. Science 389 (6762); doi:10.1126/science.adl0882
The newly identified dragonfly species, Corduladensa asorni, found in Alberta’s Dinosaur Regional Park, represents Canada’s sole Mesozoic dragonfly, bridging a significant 30 million-year gap in the evolutionary lineage of dragonflies.
Corduladensa asorni. Image credit: Alex Anderson.
The fossilized wings of Corduladensa asorni were uncovered in 2023 by undergraduate students at McGill University during a vertebrate paleontology field course at Dinosaur State Park.
“We were digging in areas where numerous leaf fossils had been found, breaking the rocks,” explained Andre Mueller, a paleontologist from McGill University.
“When we uncovered the partial wings, we were astonished, as we didn’t anticipate discovering insects in that location.”
Due to its remarkable characteristics and unique anatomy, Corduladensa asorni led researchers to establish a new family called Cordualadensidae.
“This marks the first dragonfly from the age of dinosaurs identified in Canada,” noted Mueller.
“Its wingspan was comparable to that of a human hand, and although it was small, it played a crucial role in the Cretaceous ecosystem.”
Fossil wings of Corduladensa asorni. Image credits: Mueller et al., doi: 10.1139/cjes-2024-0162.
“This discovery showcases impression fossils, an entirely new method of preserving local insect fossils, effectively doubling our knowledge of insects from the Dinosaur Regional Parks,” stated Dr. Alexandre Demars Potvin from McGill University.
“We have begun to find more insect fossils by broadening our search areas and methodologies.”
“The diversity of insect life during this era would have been far greater than previously believed.”
The discovery of Corduladensa asorni aids in closing a 30 million-year evolutionary gap.
It is also the first known member of a significant group of dragonflies termed Cavilabiata found in North America.
“The wing anatomy indicates that this species was adapted for gliding, a trait associated with today’s migratory dragonflies and likely vital to their success,” commented Professor Hans Larson of McGill University.
“This specimen offers insight into what life in Canada was like 75 million years ago and provides an important new piece of the ecological puzzle in one of the most diverse regions rich in dinosaur fossils.”
The team’s publication was released this month in the Canada Journal of Earth Science.
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Andre S. Mueller et al. A new family of fossil dragonfly (Odonata, Kabilaviata) from the Late Cretaceous (Campanian) Dinosaur Park Formation in Alberta, Canada. Canada Journal of Earth Science Published online on August 1, 2025. doi:10.1139/cjes-2024-0162
This excerpt is from our human stories newsletter, focused on the archaeological revolution—sign up to receive it monthly.
In human stories, I aim to address common questions about human evolution. In February 2021, I tackled a query that many find perplexing—whether Neanderthals and modern humans are distinct species (short answer: species boundaries are ambiguous).
This month, we confront another frequently asked question: Do Denisovans, the extinct human group once prevalent in Asia, have a designated species name? If so, what should that name be?
The debate regarding the “official” name of the Denisovans has been lively since their discovery in 2010. Notably, in June, the skull of Harbin, dubbed the Dragon Man from northern China, was classified as Denisovan through molecular evidence. This marked the first acquisition of a Denisovan skull, giving us insights into their facial features.
While participating in New Scientist discussions, host Rowan Hooper asked why Denisovans lack a species name. Why can’t we refer to them as Homo Denisovanensis, similar to how Neanderthals are called Homo Neanderthalensis?
I preferred a straightforward explanation: insufficient information has hindered a definitive classification of Denisovans. Their DNA shows significant divergence from Neanderthal DNA; yet, we require detailed insights into their anatomy and skeletal structure.
However, this inquiry is multifaceted. First, we must identify which fossils unequivocally belong to Denisovans. This involves analyzing numerous specimens and decades of research, complicating the resolution. Secondly, we need to determine which of the assigned names should take precedence under our classification norms—a legal question that adds to the complexity.
Who’s Included and Who’s Excluded?
A brief reminder about Denisovans: they are an enigmatic group of humans initially identified in 2010 from fragments of a finger bone discovered in the Denisova Cave in Siberia’s Altai Mountains. Genetic analysis revealed they were distinct from both modern humans and Neanderthals. Moreover, many contemporary individuals, especially in Southeast Asia and Melanesia, carry Denisovan DNA.
This suggests that Denisovans were quite widespread in East Asia over the past several hundred thousand years. So, where are the Denisovan fossils?
Fifteen years later, a handful of Denisovan fossils have been actively categorized. For example, mandibles discovered on the Tibetan Plateau were identified through fossil proteins and sediment DNA. Similarly, a jawbone retrieved from the Pengle waterway off the coast of Taiwan was confirmed as Denisovan in April.
Nonetheless, we still lack a complete skeleton. Identifying the Harbin skull as Denisovan brought us closer to understanding their appearance, yet many more discoveries are necessary.
Numerous human fossils in East Asia potentially belong to Denisovans. However, categorizing these remains has proven challenging, as they often do not resemble established species like modern humans, Neanderthals, or even Homo Erectus. If adequate specimens surface, thus confirming their Denisovan identity, our understanding could significantly improve, leading to a formal classification.
But how do we determine which fossils are Denisovan? Ideally, we seek molecular evidence of preserved DNA or protein for comparison with the original Denisovan remnants. However, many fossils remain unanalyzed or inaccessible.
One notable effort to address this issue was a preliminary study submitted by a team led by Xijun Ni from the Chinese Academy of Sciences in March 2024. By comparing 57 human fossils for various physical traits, they constructed familial relationships between these findings.
The team found three primary groups among Eurasian hominins: Modern Humans, Neanderthals, and a third group composed of the original Denisovan fossil, the Tibetan cave jawbone, the Pengle jawbone, and the Harbin skull. This third category appears to represent those we refer to as Denisovans.
This is an intriguing proposition, but others disagree.
A collection of contentious fossils from Hualongdong, southern China, offers a wealth of material: an almost complete skull, 14 teeth, an upper jaw, six isolated teeth, and additional fragments dating back around 300,000 years.
While the NI team classified the Hualongdong specimens as part of the Denisovan group, a study led by Xiujie Wu in July suggested that these teeth did not show clear correlations, proposing instead that they may belong to a different hominin group. Another interpretation could be that the Denisovans at Hualongdong were somewhat disparate from those in other regions.
In the meantime, other intriguing fossils from Asia continue to emerge. Among them are specimens from Dariscal and Jinniushan, both around 260,000 years old, which Ni’s team has suggested might also belong to the Denisovan lineage.
As the list of contending Denisovan fossils grows, we must decide how to categorize them.
The Harbin Skull
Hebei Geo University
Homo — What Does It Mean?
Interestingly, I was part of the team that described the Harbin skull in 2021, and we named it Homo Longhi. So, could that be the name we assign to Denisovans?
However, last year a competing proposition was put forth by Woo and Christopher Beh from the University of Hawaii, who suggested that we should center around fossils from Xujiayao in northern China, proposing to call this new species Homo Jurensis—fossils that would include the original Denisovan findings.
This idea’s strength lies in the resemblance of Xujiayao fossils to Denisovan remains, a point also observed by the NI team. However, Bae and Wu aimed to designate the Xujiayao fossils as “type specimens.”
This raises two issues: the classification of fossils and the naming protocols. Let’s examine each aspect separately.
In classification, the Homo Jurensis proposal faces challenges. Bae and Wu classify the Harbin skull as Homo Jurensis or Denisovan, yet it lacks sufficient resemblance to warrant such designation. A study published in June demonstrated molecular evidence clearly linking the Harbin skull to Denisovans. Hence, identifying those fossils as Denisovan would contravene objective realities, making Homo Jurensis seem unfounded.
What about taxonomy? This area is intricate. A crucial factor is the concept of priority, where the first proposed name tends to gain precedence. Hence, Homo Longhi might likely take precedence over Homo Jurensis as it was suggested three years earlier.
Are there alternative names for Denisovans?
The excavators of Denisova Cave never formally classified Denisovans as a distinct species. Anatoly Derebianco, part of that team, suggested the name Homo Sapiens Altaiensis, implying they would serve as a modern human subspecies—yet this proposal lacked formal status, rendering it typically insignificant.
This year, Derebianco has published a series of papers discussing what Denisovans could be. His references include locations in Mongolia, Uzbekistan, Tajikistan, and Iran, referring to them collectively as Homo sapiens denisovan. I remain unsure if formal explanations were provided, as only abstracts were published, and if completed, it occurred post the naming of Homo Longhi.
Lastly, it’s possible that one of the names was assigned to an Asian human fossil within an obscure publication decades ago. If the fossil is ultimately identified as Denisovan, the name takes precedence (assuming it was adequately introduced). Nevertheless, Wu, Bae, Ni, and others assessed this notion in 2023 and concluded that many crucial fossils were not appropriately named. For instance, there was a suggestion to label Dali’s skull as Homo Dariensis, yet such ideas amounted to informal statements rather than formally recognized classifications.
Your head might be swirling from this cascade of names and species classifications, so let’s recap: the critical takeaway is our evolving understanding of Denisovans, which brings us closer to officially designating their name.
Given our comprehension of taxonomic norms and their significance, Homo Longhi could emerge as the official designation. Although I can’t influence the decision, they will always remain Denisovans in my mind.
Recent studies have indicated significant enhancements in daytime alertness, overall sleep quality, and reductions in apnea paralysis index, suggesting that respiratory muscle training using blown shanks (conch) could become a novel approach for alleviating obstructive sleep apnea symptoms in the future.
Upper airway muscle training through shank blowing enhances subjective assessments of daytime drowsiness and sleep quality by improving objective indicators of obstructive sleep apnea severity. Image credit: Sharma et al., doi: 10.1183/23120541.00258-2025.
Obstructive sleep apnea (OSA) is a prevalent sleep disorder characterized by repeated breathing interruptions during sleep due to airway obstructions.
This condition leads to excessive snoring, disrupted sleep patterns, and daytime fatigue, while also heightening the chances of hypertension, cardiovascular issues, and strokes.
Blowing the shell of a conch or shank has been an integral part of Indian culture for centuries.
Recent research revealed that individuals with moderate OSA who engaged in shank blowing experienced improved sleep quality, greater daytime alertness, and fewer nighttime breathing disturbances.
Dr. Krishna Sharma, a researcher at the Eternal Heart Care Center and Research Institute in Jaipur, stated:
“The standard treatment for OSA involves a continuous airway pressure machine (CPAP), which keeps the airways open by delivering airflow through a face mask throughout the night.”
“While effective, many patients find it uncomfortable and struggle to adhere to its use.”
“In my clinical practice, several patients reported feeling more refreshed and experiencing fewer symptoms after regularly practicing shank blowing, a traditional yoga breathing technique that involves expelling air through the conch shell.”
“These insights prompted us to design scientific research to rigorously evaluate whether this ancient technique serves as a substantial treatment for those suffering from OSA.”
The study included 30 participants aged 19-65 diagnosed with moderate OSA, who were evaluated at the Eternal Heart Care Center and labs between May 2022 and January 2024.
Polysonography was utilized for assessment, where participants were monitored during sleep and questioned about their sleep quality and daytime alertness.
They were randomly assigned to either practice blowing conch shells (16 patients) or engage in deep breathing exercises (14 patients).
Participants were provided with traditional shanks used in yoga and received in-person training from the research team before commencing home practice.
They were encouraged to practice at home for at least 15 minutes, five days a week. After six months, participants were re-evaluated.
Those practicing shank blowing exhibited a 34% reduction in daytime sleepiness compared to those doing deep breathing exercises.
Additionally, they recorded higher blood oxygen levels during sleep.
“The technique of blowing the shank is distinct,” Dr. Sharma explained.
“It incorporates deep inhalation followed by a powerful, sustained exhalation through tightly pursed lips.”
“This method generates strong vibrations and airflow resistance, which can fortify the upper airway muscles, such as the throat and soft palate.
“The unique spiral design of the shanks may also create acoustic and mechanical effects that assist in stimulating and regulating these muscles.”
“For individuals living with OSA, particularly those who find CPAP uncomfortable, costly, or inaccessible, our findings present a promising alternative.”
“Shank blowing is a simple, low-cost breathing technique that can enhance sleep and mitigate symptoms without reliance on machines or medicine.”
Krishna K. Sharma et al. 2025. Effectiveness of shank blowing on moderate sleep apnea: a randomized controlled trial. ERJ Open Research 00258-2025; doi:10.1183/23120541.00258-2025
Cut marks on the foot bone from El Mirador cave, Spain
iphes-cerca
The discovery of human remains in caves in northern Spain indicates that Neolithic people may have resorted to cannibalism after battles.
Francesc Marginedas from the Catalan Institute of Human Paleoecology and Social Evolution (IPHES) in Tarragona, along with his team, examined fragments from 650 human remains found in El Mirador cave on Mount Atapuerca. These remains date back approximately 5,700 years and belong to 11 individuals.
All examined bones displayed evidence that these individuals had been consumed by other humans. Some exhibited chop markings made by a stone tool, while others showed translucent portions with gently rounded edges. Some of the long bones were fractured open with stones to access the bone marrow, and smaller bones like metatarsals and ribs had clear human bite marks.
This research supports the notion that cannibalistic practices were more prevalent in human history than previously believed.
El Mirador marks at least the fifth significant site in Spain with notable evidence of cannibalism during the Neolithic era, a shift period from foraging to agriculture, according to Margida. “There’s a growing understanding that such behavior was more frequent than we anticipated.”
The motives behind these cannibalistic acts remain unclear. Some archaeological sites show skull cups indicating a ritualistic aspect to cannibalism, while others hint at survival strategies during dire circumstances.
However, Marsidas and his team propose that the findings at El Mirador suggest these acts were linked to warfare. There was a significant amount of animal remains, and no signs of nutritional stress among the humans involved, indicating this early agricultural community was not struggling with food scarcity. Their findings offer no indication of ritualistic behavior, as human bones were found alongside animal remains.
The ages of the individuals ranged from under seven to over fifty, implying that an entire family unit may have been lost to conflict. Radiocarbon dating indicated that all 11 individuals were killed and consumed within a few days.
This evidence reflects patterns of conflict and cannibalism, which have also been noted at two other Neolithic sites: the Von Bregore Caves in France and Helxheim in Germany. This period appears marked by instability and violence due to community clashes with neighboring groups and newcomers.
While Margida and his colleagues are uncertain about the reasons behind these cannibalistic practices, historical ethnographic studies suggest that such acts during warfare can serve as a method of “ultimate exclusion.” “We believe that one group attacking and consuming another serves as a humiliating statement,” states Merseydus.
“The thoroughness of the body’s treatment and consumption is remarkable.” Paul Pettitt from Durham University, UK, comments, “The aggressive nature shown in these artifacts, regardless of whether the consumed were relatives or adversaries, mirrors a dehumanization process during consumption.”
Sylvia Bello from the Museum of Natural History in London concurs that this evidence of death likely ties back to conflicts but remains skeptical about the notion of consumption as humiliation. She suggests that cannibalism may stem from aggression and animosity rather than ritualized farewell practices, implying a more complex interpretation. “It could carry ritual significance, even amid warfare,” she asserts.
Neanderthals, Ancient Humans, and Cave Art in France
Join new scientist Kate Douglas on an enthralling exploration of the key Neanderthal and Upper Paleolithic sites in southern France, spanning from Bordeaux to Montpellier.
Stone tools unearthed in Sulawesi, Indonesia, crafted by an enigmatic ancient human species
Budianto Hakim et al.
Seven stone tools discovered on Sulawesi, Indonesia, represent the earliest proof of ancient humans navigating the ocean, with an estimated age of 1.4 million years.
These artifacts may shed light on how a diminutive human species known as the “Hobbit” reached neighboring Flores Island.
The first artifact was found embedded in a sandstone outcrop at a location called Calio Budiant Hakim. In 2019, excavations revealed six additional tools on the same outcrop, courtesy of the Indonesian National Research Innovation Agency.
Alongside the stone tools, Hakim and his team also discovered parts of an upper jaw, teeth, and remains of a large species of pig, Celebochoerus, along with fragments from unidentified young elephants.
While researchers couldn’t date the tools directly, sediment analysis combined with fossil pig teeth allowed them to estimate an age range between 1.04 million and 1.48 million years. Previously, the oldest human evidence in Sulawesi was dated to 194,000 years ago.
A least one of the new artifacts appears to be a flake removed from a larger piece, with its edges skillfully shaped, as noted by team member Adam Blum from Griffith University in Brisbane, Australia. While non-human primates such as chimpanzees utilize hammer-like stones to crack nuts, they don’t manipulate flakes to create tools.
“This represents an early form of cognitive ability from a species that has since vanished,” states Brumm. “We don’t ascertain the specific species, but these creations indicate human intellect at the Calio site.”
The distinct hominin species, Homo floresiensis, was unearthed in Flores in 2003. Archaeological findings suggest human presence on the island over a million years ago. However, the means by which these early humans reached the island remains a mystery.
Both Flores and Sulawesi were separated from mainland Southeast Asia by expansive oceanic barriers, even during periods of the lowest sea levels. According to Blum, the distance to Sulawesi is too great for swimming, leading to the conclusion that these early human species likely could not construct maritime vessels.
“It’s conceivable that a rare geological event, such as a tsunami, swept some early humans into the ocean, where they might have clung to floating trees or mats of vegetation, eventually reaching these islands to form isolated populations,” he suggests.
Martin Porr from the University of Western Australia identifies Homo erectus as the most probable candidate for seafaring at that time, given similarities between the tools found in Sulawesi and those associated with this species.
While the new finds support this theory, they raise numerous questions, particularly regarding whether the skills of these early human groups may need to be reassessed.
Led by the late archaeologist Mike Morwood, the team who first identified Homo floresiensis was the first to propose that Sulawesi could be crucial in understanding the ancestry of the Hobbit. As Kira Westaway from Macquarie University in Sydney, Australia mentions, “Sulawesi is positioned along a significant current that flows from Sulawesi to Flores.”
“Even Mike would have been astonished by the discovery of these ancient stone tools,” she remarks. “Though one might argue that seven tools are insufficient to support major claims, they undeniably represent the presence of early human activities.”
Neanderthals, ancient humans, cave art: France
Join new scientist Kate Douglas as she embarks on a captivating exploration of the prominent Neanderthal and Upper Paleolithic sites across southern France, spanning from Bordeaux to Montpellier.
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3D representation of a tattooed mummy. The upper image uses textures captured under visible light, while the lower image’s textures come from near-infrared photography.
M. Vavulin
The intricate tattoo, featuring motifs of tigers, birds, and mythical creatures, has been uncovered on an ice mummy dating back over 2000 years. This mummified female belonged to the Pasilic culture in Siberia, which is part of the broader Scythian civilization.
Assessing the prevalence of ancient tattoos is challenging, yet some exceptions exist, such as Ötzi “Iceman,” who lived around 3300 BC and was found preserved in ice.
Now, Gino Casparri from the Max Planck Institute for Geoanthropology in Germany and his team studied the remains of semi-nomadic Iron Age herders from the Altai Mountains of Siberia, who passed away in the 3rd or 4th centuries BC. This individual is among the few in the region whose deep burial sites remain frozen, preserving her skin’s dark and dry condition.
Tattoos featured creatures resembling both real and mythical species.
D. Riday
“When observing the mummy with the naked eye, the tattoo remains invisible,” explains Casparri. Hence, his team utilized high-resolution near-infrared imaging to uncover astonishing hidden visuals.
“We see herbivores being hunted by tigers and leopards, and in some cases, birds are depicted,” Casparri remarks. “Given their age and vivid artistic style, Pasilic tattoos are genuinely remarkable.”
One bird resembles a rooster, as noted by team member Aaron Deter-Wolf from the Tennessee Department of Archaeology, highlighting how the tattoos feature a blend of realistic and fantastical animals.
The researchers also uncovered the process behind creating these tattoos. “Our investigations reveal that tattoos were crafted using a direct puncture technique rather than being etched or stitched into the skin,” states Deter-Wolf.
One of the tattoos seems to depict a rooster.
D. Riday
Cross-cultural evidence indicates that the tattooing method used was a technique called hand-poking. In this method, the needle is dipped in ink and punctured into the skin to create dot patterns, with carbon pigments likely sourced from charcoal, soot, or ash.
The tattoos on the right forearm exhibited more intricate designs compared to those on the left, suggesting they may have been created by different artists with varying skill levels, according to Caspari. “Our research indicates that tattooing was not only a widespread practice across the Eurasian steppe over 2000 years ago but also a specialized craft requiring significant expertise and technique,” he concludes.
Ancient Greek bronze jars displayed at the Ashmolean Museum in Oxford have been discovered to contain honey.
American Chemical Society
The findings from the ancient Greek pot located at a shrine near Pompeii serve as evidence of the lasting nature of honey jars.
In 1954, a Greek burial shrine dating back to around 520 BC was uncovered in Pestum, Italy, approximately 70 kilometers south of Pompeii.
The shrine contained eight pots with sticky residues, and their contents remained a mystery since their unearthing.
Honey was initially suspected in tests conducted on one of the pots between the 1950s and 1980s by Luciana Carvalho from Oxford University.
Three distinct teams analyzed the residue but concluded that the jars contained animal or vegetable fats mixed with pollen and insect parts, rather than honey.
At that time, researchers depended on significantly less sensitive analytical methods, focusing on solubility tests.
Carvalho and her team started by examining the infrared reflection of the residues to determine their overall composition.
Ancient honey residues from the interior of the pot
Luciana da Costa Carvalho
Initially, it was hypothesized that the contents could be decomposed beeswax due to its outward resemblance and high acidity.
To test this hypothesis, the team employed gas chromatography paired with mass spectrometry, which ultimately unveiled the presence of sugars like glucose and fructose, the primary sugars found in honey.
“We unearthed a remarkably intricate mixture of acids and broken-down sugars,” states Carvalho. “The clear indicator of honey was the detection of sugar at the core of the residue.”
Further examination by Elizabeth Pierce from Oxford University confirmed the presence of a protein called major royal jelly protein, secreted by honeybees, along with the detection of peptide traces from Tropilaelaps Mercedesae, a parasitic mite that consumes bee larvae.
“This parasite is believed to derive from an Asian beehive,” Pierce comments.
Carvalho mentions that the cork seal of the bronze jar eventually failed, allowing air and microorganisms to enter. “We believe these bacteria consumed most of the sugar remnants, leading to the production of additional acids and decomposition products. What was left was an acidic, waxy residue clinging to the walls of the jar.”
“Investigating the honey offerings at the shrines in Paestum elucidates how the people honored their deities and their perceptions regarding the afterlife,” Carvalho explains.
Historic Herculaneum – discover Vesuvius, Pompeii, ancient Naples
The journey through history and archaeology embarks on a fascinating exploration where the past comes alive through Mount Vesuvius and the remains of Pompeii and Herculaneum.
Paleontologists from Argentine Patagonia have unearthed parts of the posterior skull from the previously unknown sauropod dinosaur, Levvatissaurus.
Reconstruction of the life of Astigmasaura genuflexa. Image credit: Mattia Yuri Messina.
The newly identified dinosaurs thrived in what is modern-day Argentina during the late Cretaceous period, around 95 million years ago.
This species has been scientifically named Astigmasaura ungflexa and measured approximately 18 meters (59 feet) in length, weighing over 10 tons.
These ancient giants belong to the Rebbachisauridae, a large family of sauropod dinosaurs within the superfamily Diplodocoidea.
“Rebbachisaurids are medium to large, non-selective, ground-level browsers, characterized by highly specialized skulls, elongated axial elements, and gracile appendicular skeletons.”
“Fossils from Levubatisaurus, spanning the early to late Cretaceous, are particularly diverse within the ancient supercontinent Gondwana, with numerous specimens discovered in North Africa and South America.”
“Notably, Patagonia has produced more than half of all known rebbachisaurids, including the earliest forms and the most recent Rebbachisaurus.”
Fieldwork in the El Orejano region of the Huncul Formation in Patagonia, Argentina. Image credit: Flavio Bellardini.
Fossilized remains of Astigmasaura ungflexa were found in the El Orejano area of the Huncul Formation within the Neuquén Basin in Patagonia, Argentina.
The material type of Astigmasaura ungflexa was described by paleontologists.
This new species represents one of the last Levubatisaurus dinosaurs before it went extinct around 90 million years ago.
“Astigmasaura ungflexa shares a variety of traits with other rebbachisaurids, including anterior caudal vertebrae with tall neural spines and tetrameric nerve layers, an asymmetrical neural arch, a mesolaterally compressed proximal tibia, and medially tilted distal condyles and femurs,” the researchers noted.
“Furthermore, Astigmasaura ungflexa displays a unique combination of diagnostic features that set it apart from all other sauropods.”
“This new finding not only enhances our understanding of the previously unexplored caudal and pelvic girdle anatomy of Rebbachisauridae but also indicates greater taxonomic diversity within the family during the late stages of evolutionary history than previously recognized.”
The team’s paper was published online in the journal Cretaceous Research.
____
Flavio Berardini et al. 2025. Alongside the Titans: a new Levuvacisaur dinosaur from the Huncul Formation (Upper Cenomanian) of Patagonia, Argentina. Cretaceous Research 176:106188; doi:10.1016/j.cretres.2025.106188
Artist’s interpretation of the encounter between ancient caiman and terror birds
Julian Bayona Becerra
Approximately 13 million years ago, massive predators clashed in a sprawling South American wetland. Fossils of a giant flightless bird discovered in Colombia bear tooth marks from enormous caimans.
Andrés Link from the University of the Andes in Colombia and his team were examining crocodile fossils in the museum’s collection when they identified an unusual bone. This bone belonged to the Forsulhacid bird, commonly referred to as “terror birds.” These predators possessed hooked beaks and muscular legs equipped with sharp claws. The fossilized remains were from the lower limbs of a bird standing 2.5 meters tall, making it one of the largest terror birds ever found.
However, this predator likely faced a grim fate. Initially unearthed in Colombia’s Tatacoa desert by local paleontologist César Perdomo, the bones exhibited four distinct puncture marks.
Link and his research team sought to identify the predator that dared to bite such a formidable bird. They scanned the fossil’s surface to create a digital model of the tooth marks, finding striking similarities to the teeth of ancient predators in the region. The culprit was almost certainly not a mammal.
“There are no signs of gnawing, and the markings are rounded,” Link explains. “The lines closely resemble those attributed to alligators and caimans.”
Terror birds roamed the earth when northern South America was dominated by the Pebas System, a vast network of wetlands interspersed with tropical forests and grasslands. This flooded habitat supported a diverse range of crocodile species, leading the team to link the dental impression to the giant caiman Purussaurus neivensis, estimated to be around 4.5 meters in length.
“Terror birds were undoubtedly apex predators,” remarks Link. “However, this evidence indicates that when they ventured near large bodies of water, they could also fall prey to massive caimans, either in pursuit of prey or while navigating this complex ecosystem.”
The researchers speculate that the bird may have already been deceased when the caiman encountered it, with the tooth marks indicative of scavenging. There are no signs of bone regeneration surrounding the marks. Either way, the encounter proved fatal for the terror bird.
“These types of [tooth] impressions are more prevalent than one might assume,” states Carolina Acosta Hospitalce from La Plata National University in Argentina.
In a study published last year, she and her colleagues discussed tooth marks found on a smaller, older fossil terror bird—about 43 million years old—suggesting that ancient carnivorous marsupials also preyed upon these birds. These markings were also found on the lower limbs, leading Hospitalce to ponder whether this area of the bird’s anatomy is particularly vulnerable to predators.
“[Bite marks] offer fascinating glimpses into past life,” comments Stephanie Drumheller from the University of Tennessee.
When studying ancient environments, she notes there is a tendency to categorize extinct organisms into strict ecological roles. However, food webs can be quite intricate.
“This is an animal that thrived in aquatic environments, while another lived on land, entirely separate from one another. Yet, nature often defies our neat categorizations,” Drumheller observes.
Morrison, a marine creature from the Cambrian period, could represent an early arachnid
Junnn11 @ni075 CC BY-SA 4.0
Research indicates that the brains of ancient sea creatures, dating back over 500 million years, were structured similarly to those of spiders. This challenges past theories that arachnids originated on land.
Morrison reflects a time of significant biological diversity increase, known as the Cambrian Explosion, when various animal groups began appearing in fossil records. These creatures possessed chelicerae, pincer-like mouthparts likely used for tearing into small prey.
Previous beliefs suggested that modern relatives of Morrison, which include horseshoe crabs, were connected to spiders. However, Nicholas Strausfeld and his team at the University of Arizona propose otherwise.
The researchers reexamined specimens of Mollisonia symmetrica, collected in 1925 from British Columbia, Canada, and now housed at Harvard University’s Comparative Zoology Museum. Strausfeld and his colleagues identified a brain structure that had previously been overlooked.
In horseshoe crabs, the chelicerae exhibit a neural connection at the back of the brain; however, in Morrison, this structure was inverted, with chelicerae linked to two neural regions that offered a perspective on the forefront of the nervous system.
Strausfeld notes that this orientation is “characteristic of arachnid brains.” Unlike the brains of crustaceans and insects, which are folded inward, arachnids have crucial areas for planning agile movements situated at the back. This architecture likely contributes to the remarkable agility and speed seen in spiders.
While it was previously thought that arachnids evolved on land, the earliest existing land fossils of obvious arachnids will not appear for millions of years later, according to Strausfeld. “Perhaps the first arachnids inhabited tidal environments, like Morrison, in search of prey,” he mentions.
Mike Lee, a researcher at Flinders University in Adelaide, Australia, who was not involved in the study, suggests that Morrison may now be viewed as a primitive arachnid. “We now recognize it possessed a brain akin to that of a spider, indicating it was an aquatic relative of the early spiders and scorpions,” Lee states.
Nonetheless, he cautions that while researchers strive to extract as much insight as possible from a single fossil, there remains a degree of ambiguity in interpretation. “It’s akin to attempting to piece together a unique Pavlova after it has been dropped,” he explains.
The Pilbara Craton in Western Australia features rocks that date back 3.5 billion years.
Elizabeth Czitronyi / Alamy
Rocks from Australia reveal that tectonic plates were shifting as far back as 3.5 billion years ago, a breakthrough that alters our understanding of the onset of plate tectonics over subsequent hundreds of millions of years.
Currently, along with roughly eight major hard rock plates on Earth’s surface, several smaller plates are interacting with the softer rock layer beneath. When these plates’ edges grind against one another, it can lead to sudden geological upheavals, such as earthquakes, and gradual processes like mountain range formation.
However, there is disagreement among geologists regarding the configurations of these ancient plates and their movements. Some researchers claim to have found indications of tectonic activity as far back as 4 billion years ago when the planet was significantly hotter; others argue that more compelling evidence is noted after 3.2 billion years ago.
Much of this data derives from the chemical compositions of rocks, which suggest past movements. Despite this, records detailing the interactions of early plates remain scarce, which is regarded as critical evidence supporting plate tectonics.
Recently, Alec Brenner and his team from Yale University claim to have uncovered substantial evidence of relative plate movement dating back 3.5 billion years in the eastern Pilbara Craton of Western Australia. They traced the magnetic orientation of rocks aligned with Earth’s magnetic field, observing shifts similar to how a compass needle changes direction when the ground moves.
Brenner and colleagues initially dated the rock using radioisotope analysis, establishing that at certain times, the rock’s magnetism remained unchanged. By observing this magnetization shift, they demonstrated that the rock mass progressively moved at a rate of several centimeters each year. They compared these findings to similarly examined rocks in the Barberton Greenstone Belt in South Africa, which exhibited no such movement.
“This suggests that some type of plate boundary must exist between these two regions to accommodate that relative movement,” remarked Brenner during his presentation at the Goldschmidt Geochemical Conference in Prague, Czech Republic, on July 9.
“Approximately 3.8 billion years ago, the Pilbara plate transitioned from medium to high latitudes, eventually reaching proximity to Earth’s magnetic poles and, possibly millions of years later, to the latitude of Svalbard.”
“If two plates are moving relative to one another, there must be various dynamic interactions happening between them,” noted Robert Hazen from the Carnegie Institute of Science in Washington, DC. “It cannot be an isolated event.”
Nonetheless, multiple interpretations exist regarding the underlying causes of this movement, according to Hazen. The variability in plate movement rates adds to the confusion, and existing data could align with various theories regarding Earth’s interior structure at that time.
At the very least, this discovery indicates the presence of structural boundaries, according to Michael Brown from the University of Maryland. However, he argues that the nature of rock movement appears dissimilar to contemporary understanding of plate tectonics. “Essentially, the Pilbara plate moved to higher latitudes to prevent stagnation, which is atypical within any current plate structural model.”
Brown posits that this aligns with the theory suggesting the Earth’s crust consisted of numerous smaller plates propelled by a thermal mantle plume during that period. He believes the remnants of these small plates examined by Brenner and his team provide evidence of movement; however, due to their limited representation of the crust, they may not accurately reflect broader Earth movements.
Brenner’s team also discovered indications that the Earth’s magnetic field underwent reversals around 3.46 billion years ago. Unlike today’s magnetic field reversals, which occur every million years, these ancient magnetic shifts seemed to happen much more frequently, over spans of tens of millions of years. This could imply a fundamentally different set of energies and mechanisms at play, as noted by Brenner.
Hazen emphasized that the scarcity of magnetic data leads to ongoing debates about the state of Earth’s magnetic field during that era of its evolution. “I believe this discovery raises the bar significantly,” he asserts. “It represents a vital breakthrough in understanding early magnetic reversals, shedding light on the core’s geomechanics in ways previously unexplored.”
Recent images from the NASA/ESA Hubble Space Telescope highlight NGC 1786, a spherical cluster located in the constellation of Dorado.
This Hubble image depicts NGC 1786, a spherical cluster approximately 163,000 light-years away in the Dorado constellation. The color images were created from various exposures captured in visible and near-infrared regions of the spectrum using Hubble’s Wide Field Camera 3 (WFC3). Three filters sampled different wavelengths. Colors were assigned by applying distinct hues to each monochromatic image related to individual filters. Image credits: NASA/ESA/Hubble/M. Monelli/M Hözsaraç.
Spherical clusters are ancient star systems, bound together by gravity, typically spanning around 100-200 light-years.
These clusters host hundreds of thousands, or even millions, of stars. The significant masses at the cluster’s core attract stars inward, forming a spherical configuration.
Considered among the universe’s oldest known objects, spherical clusters are remnants from the early Galactic era. It’s believed that all galaxies harbor a population of these structures.
The Large Magellanic Cloud, a neighboring dwarf galaxy located about 163,000 light-years away, possesses roughly 60 spherical clusters, including NGC 1786.
This spherical cluster, also referred to as ESO 56-39, was discovered on December 20, 1835, by the British astronomer John Herschel.
“Data from the new image is derived from spherical clusters within Milky Way galaxies, including the Large and Small Magellanic Clouds, as well as Fornax dwarf spheroidal galaxies,” stated Hubble astronomers.
“Our galaxy contains over 150 of these extensively studied ancient spherical formations.
“Due to its stability and longevity, it acts as a galactic time capsule, preserving stars from the galaxy’s formative stages.”
“While it was once believed that all stars in spherical clusters formed nearly simultaneously, our research on ancient clusters within our galaxy has revealed multiple populations of stars of varying ages,” they further explained.
“To utilize spherical clusters as historical markers, it’s essential to comprehend their formation and the origins of stars from different ages.”
“This observational program analyzed older spherical clusters like NGC 1786 in external galaxies to determine whether they contained multiple star populations.”
“Such studies can provide insights into the original formation mechanisms of the Large Magellanic Cloud as well as the Milky Way galaxy.”
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