Saturday, October 17, 2026

 

Fatal Neanderthal wound may be earliest evidence of a wooden spear attack on a human ancestor



University of Cambridge
3D rendering of Shanidar A wound

video: 

A video of a 3D rendering of the hole in the scapula and fragments embedded in the sediment underneath the scapula in situ prior to conservation.

view more 

Credit: Dr Emma Pomeroy




  • Circular hole in 75,000-year-old scapula suggests lethal conflict involving sharpened wooden spears among Neanderthals in the Middle East.
     
  • Remains also show evidence of brutal facial injury at least a year before death, meaning Neanderthal was likely cared for prior to dying violently.


A round hole in the shoulder blade (scapula) of a Neanderthal whose partial remains were unearthed in a cave in Iraqi Kurdistan may be the earliest known example of lethal interpersonal violence with a wooden spear in the hominin fossil record.

The Neanderthal’s scapula – a broad, flat bone so thin in places it becomes almost translucent when held up to light – was preserved almost intact under seven-and-a-half metres of rock and sediment for around 75,000 years.

Intact, that is, apart from the 15mm-wide circular perforation, which Cambridge archaeologists who led the excavation say was made by a spear of sharpened wood, as a spear tip of flint or stone would leave a flat or angular hole.

The spear penetrated the left chest cavity from the front and travelled through the body – including lung and likely major arteries – before punching a hole in the left scapula, causing rapid death. Researchers think the fatal strike may have been an intended “heart shot”.

Bevelling around the hole is typical of an exit wound. The team found tiny shards of bone displaced by the weapon, the position of which suggests a spear entered from above at a downward trajectory. They were even able to piece back part of the hole using these fragments, guided by faint ridges where the bone was marked by muscle.

“It’s extraordinary to have a perfectly preserved scapula from 75,000 years ago. These bones are so thin that you often don’t get complete scapulae from modern burials,” said Dr Emma Pomeroy, study lead author from Cambridge’s Department of Archaeology. “We were able to lift it out in one piece from under almost eight metres of rock and sediment.”

Archaeologists call the remains Shanidar A, named for the famous cave in which they were found, and have published their findings in the journal Scientific Reports.

Due to decomposition, very few wooden objects survive from deep in prehistory. Some waterlogged examples of spears dated to around 200,000 years ago – when early Neanderthals roamed Europe – were found in Schöningen, Germany, in the 1990s.  

These preserved spears – some over two metres long – were manufactured from carefully-selected timber to have weight distribution optimised for throwing, like modern javelins, and were probably used for hunting large game.

The earliest known rounded wooden spear is over 400,000 years old. Just the pointed end survived, pulled from the UK shoreline at Clacton-on-Sea in 1911.

Similar technology may well have caused the death of Shanidar A, argue researchers. They say the wound could be the first evidence for use of sharpened wooden spears in the prehistoric Middle East.

“Holes left by recreations of spears from this time are an excellent fit for the one we found in the Neanderthal scapula,” said Pomeroy, a fellow at Newnham College, Cambridge. “That early technology absolutely works for this wound.”

“What evidence we have suggests that Neanderthals and their ancestors developed woodworking and weapon-making skills many thousands of years before the death of Shanidar A. This package of capabilities could have spanned the full range of Neanderthal homelands, from Wales to Siberia.”

Pomeroy points out that the death might have been a hunting accident. “Animals such as mammoths may have been hunted up close with thrusting spears, so it’s easy to imagine lethal injuries.”

However, she says there are hints of deliberate violence. “The position of the wound and the force required to push it right through the Neanderthal’s body bear the hallmarks of an intended kill shot directed towards the heart.”  

There is no way of knowing the context for the violence, and whether modern humans could have been involved, although archaeologists believe the most straightforward interpretation is interpersonal violence between Neanderthals.

“All we can ever know about the end of this Neanderthal’s life is that it was violent, and came at the end of a wooden spear,” said Prof Graeme Barker, fellow of St. John’s College, Cambridge, who leads the Shanidar Cave excavations.

“Evidence of systematic violence is extremely rare in deep prehistory. The vast majority comes from periods of settled farming communities thousands of years after hunter-gather societies like our Neanderthals.” 

Split tooth and signs of caring

The shoulder blade was excavated alongside a mostly complete right hand, two left ribs plus a right-rib fragment, and seven teeth – all that remains of an adult Neanderthal estimated to have been around 45 years old when they died violently.

One tooth, an incisor from the front of the lower jaw, had been split lengthways, with only half remaining, while surrounding teeth had been rotated inward.

The half-tooth had significant tartar (dental calculus) build-up along the exposed root canal, suggesting it stayed in the mouth for some time after what scientists say must have been major blunt-force trauma to the front of the face.

“Surviving a blow that splits a tooth in this fashion, then continuing to live and eat for a period of at least a year and maybe more, would have required care and support from other Neanderthals,” said Pomeroy.

Shanidar A may have been fed soft food after the initial injury, says Pomeroy. Previous research on sediment in Shanidar Cave shows that plant foods were being soaked before cooking around the same time. “There’s no doubt that Shanidar A would have had difficulty communicating and been in absolute agony for a long period of time.”

“The remains of Shanidar A reflect the dual nature of so much of what we recognise as human. On the one hand, we have evidence of a terribly violent end. On the other, this was clearly an individual who was cared for during their lifetime.”

Prof Barker said: “It is fascinating to have evidence for both compassion and violence amongst Neanderthals, our closest evolutionary cousins, embodied in this one individual.” 

‘Funerary behaviour’

The vast cave in the foothills of Iraqi Kurdistan known as Shanidar is one of the world’s most famous Neanderthal sites. Excavations in the 1950s led by Ralph Solecki found ten individuals, including a “cluster” of four located in the same spot despite dying at different times, suggesting the Neanderthals had returned to inter their dead.

Remains of a Neanderthal from another part of the cave, who lived thousands of years later, showed evidence of a paralysed arm, arthritis, deafness and partial blindness. Yet they had lived a long life, so must have been cared for.

These signs of compassion, social support, and ritual around death, led to a revision of the Victorian view of Neanderthals as brutish and subhuman. Evidence of sophistication has continued to emerge, from cave art to jewellery, along with genetic analysis showing interbreeding between Neanderthals and modern humans.

Shanidar A was unearthed in 2020, and is one of three further Neanderthals found in the burial cluster by the Cambridge-led team since 2015, taking the total to five – four adults and an infant – in an area of the cave just 1.5 metres long by one metre wide, and a metre deep.

The spot is located directly behind a large vertical boulder, a “prominent marker”, and the remains are separated by thin layers of sediment. Shanidar A is the deepest yet found in the cluster, and possibly the first lain to rest in the space, positioned on their back, head facing east, as with the body directly above.

“The best explanation is intentional and symbolic funerary behaviour,” said Pomeroy. “These Neanderthals returned to the same place to lay their dead to rest. Some were deposited before the earlier body had fully decomposed, so this was happening within years or decades.”

 

Social connections alone may not tell the whole story: Loneliness and purpose in life linked to mental health after the Noto Peninsula disasters





Kanazawa University






Researchers at Kanazawa University analyzed data from 16,296 adults affected by the 2024 Noto Peninsula Earthquake and the subsequent heavy rainfall disaster to examine factors associated with psychological distress and the relationships among social networks, loneliness, and purpose in life.

The study used data from the Noto Peninsula Earthquake and Heavy Rainfall Disaster Survivor Health Survey, conducted by Ishikawa Prefecture in January and February 2025. Among the 13,492 participants with available K6 scores, 1,256 (9.3%) met the criterion for serious psychological distress.

Greater loneliness was associated with higher odds of serious psychological distress, whereas a stronger sense of purpose in life was associated with lower odds. Current housing type, self-rated health, frequency of going out, sleep duration, economic circumstances, disaster reminder-related emotional distress, and current mental illness were also associated with psychological distress. In contrast, indicators of earthquake- and heavy-rainfall-related damage or injury were not independently associated with serious psychological distress after adjustment for other factors.

Structural equation modeling further showed that stronger social networks were associated with lower loneliness and a greater sense of purpose in life, which in turn were associated with lower psychological distress. These findings suggest that the availability of social ties alone may not fully capture how people experience their relationships during disaster recovery.

“Our findings suggest that post-disaster support should not focus only on whether people have social connections,” said Tetsu Hirosawa, co-first author of the study. “It is also important to consider whether people feel lonely and whether they retain a sense of meaning, purpose, and role in daily life. Social connections, loneliness, and purpose in life are closely related, but they are not the same thing.”

The findings may help inform long-term disaster recovery. In addition to creating opportunities for social interaction, community-based support may benefit from assessing survivors’ subjective experiences of loneliness and supporting the restoration of meaningful activities, roles, and purpose. Because this was a cross-sectional study, the observed associations should not be interpreted as causal.

The study was based on survey data collected by Ishikawa Prefecture to assess the health status and support needs of disaster survivors. The authors thank Ishikawa Prefecture, the participating municipalities, and all residents who responded to the survey. The research was supported by the Moonshot Research and Development Program (JPMJMS229C-14a).

 

Researchers discover Achilles' heel of antibiotic-resistant bacteria



Umea University
Gabriel Torrens

image: 

Gabriel Torrens, first author of the study and researcher at the Department of Molecular Biology at Umeå University in Sweden.

view more 

Credit: Mattias Pettersson





Even highly antibiotic-resistant bacteria become more vulnerable when their cell wall transport system is disrupted, according to a new study from Umeå University in Sweden. The discovery reveals a previously overlooked weakness that could help researchers develop new strategies to combat antibiotic resistance.

“The search for new antibiotics remains crucial, but we also need smarter ways to extend the lifespan of the antibiotics we already have. We wanted to find out whether resistant bacteria could be pushed into an evolutionary dead end, where the very mechanisms that help them survive instead make them vulnerable to existing antibiotics,” says Felipe Cava, Professor at the Department of Molecular Biology at UmeÃ¥ University.

Antibiotic resistance is a growing global health challenge. As bacteria evolve resistance to medicines, infections become increasingly difficult to treat, raising the risk of severe illness and death. Now, researchers at Umeå University have identified an unexpected vulnerability in certain resistant bacteria that could potentially be exploited to make them susceptible to antibiotics once again.

The study, published in Nature Communications, was led by Felipe Cava's research group at Umeå University in collaboration with researchers from the Spanish National Research Council (CSIC) and Umeå University Hospital.

Bacteria are protected by a robust cell wall that helps them survive in harsh environments. The cell wall is also the target of β-lactam antibiotics, a class of drugs that includes penicillins and remains among the most widely used treatments for bacterial infections. Some bacteria, however, have evolved the ability to continue building their cell wall despite antibiotic treatment, making them resistant.

A well-known example is methicillin-resistant Staphylococcus aureus (MRSA), which causes difficult-to-treat infections worldwide. Over time, these bacteria can acquire additional mutations that further strengthen their resistance.

The researchers found that resistant bacteria depend on a small lipid molecule called undecaprenyl phosphate, which acts as a conveyor belt for the building blocks needed to construct the cell wall. When this transport system was disrupted, it became considerably more difficult for the bacteria to maintain their resistance.

In the study, the researchers tracked how MRSA evolved during antibiotic treatment. They identified genetic changes that enabled the bacteria to regain resistance. However, when the transport of cell wall building blocks was disrupted, this evolutionary route was effectively blocked.

The researchers also found that bacteria carrying new resistance mutations often grew more slowly and were less capable of causing infection.

“What surprised us was that some mutations that help bacteria survive antibiotic treatment simultaneously create new vulnerabilities. Rather than becoming stronger in every respect, the bacteria appear to be forced into a trade-off,” says Gabriel Torrens, first author of the study and researcher at the Department of Molecular Biology at UmeÃ¥ University.

The phenomenon was observed not only in MRSA but also in Streptococcus pneumoniae, a bacterium that commonly causes diseases such as pneumonia. This suggests that the same vulnerability may exist across many antibiotic-resistant Gram-positive bacteria, a group that includes staphylococci and pneumococci.

The researchers believe the discovery opens a new avenue for future therapies aimed at restoring the effectiveness of existing antibiotics. Its potential to lead to new treatments has already resulted in the filing of a patent application.

The study was funded by the Swedish Research Council (research environment grant within infection and antibiotics), the Knut and Alice Wallenberg Foundation, and the Kempe Foundations. Gabriel Torrens was recruited to UmeÃ¥ University through the ‘Excellence by Choice’ postdoctoral programme and is currently funded by the Swedish Society for Medical Research (SSMF).

 

Wetland reclamation brings limited agricultural gains but high flood exposure




Chinese Academy of Sciences Headquarters






Wetland reclamation has long been regarded as a strategy to meet growing food demand, given the favorable soil and water conditions of wetlands. However, the trade-off between potentially greater crop production and the ecological cost of lost wetlands—especially involving flood regulation—has not been well understood.

Now, a research team led by Prof. DONG Jinwei from the Institute of Geographic Sciences and Natural Resources Research of the Chinese Academy of Sciences, together with international collaborators, has mapped global croplands reclaimed from wetlands from 2000 to 2022 and evaluated their crop production performance and flood exposure risk.

The study, which was published in Nature Sustainability, found that wetland reclamation provided limited agricultural gains, with no clear yield advantage over existing croplands and only a marginal contribution to global crop production. Nearly half of wetland-reclaimed croplands produced lower yields than existing croplands, especially those used for upland crop cultivation. Globally, these croplands accounted for only 0.1% of total crop production, with their contribution remaining below 1% in 79% of subnational regions.

Meanwhile, a substantial proportion of wetland-reclaimed croplands faced disproportionately high flood exposure. Globally, 52% of these croplands (21,001 km²) were located in regions susceptible to significant flood hazards, with an average flood-exposure probability 23 times that of croplands overall. Moreover, wetland reclamation has increasingly expanded into flood-prone areas, further increasing potential exposure to flood hazards.

The researchers also discovered that 60% of wetland-reclaimed croplands faced “lose–lose” outcomes, in which limited agricultural gains coincided with high flood exposure. These hotspots were concentrated in East and South Asia, North America, eastern South America, and Oceania and were particularly prevalent in food-importing or low-income countries. China, the United States, and India collectively accounted for 34% of these tradeoff hotspots.

The findings provide the first global-scale evidence of the trade-offs between agricultural gains and ecological costs associated with wetland reclamation. According to the researchers, effective interventions are needed to ensure that agricultural expansion does not compromise critical wetland ecosystem services and long-term sustainability.

 

What makes a place ready for radical innovation?




Universiteit van Amsterdam

 





Why do some cities embrace new technologies and business models while others are slower to take them up? Economic conditions, infrastructure and access to technology clearly matter. But a new study from the University of Amsterdam and the University of St Gallen suggests there is another factor that has received much less attention: the psychological openness of the local population. Regions where people are more open to new experiences and unfamiliar ideas are more likely to be early adopters of radical innovations, the study says.

The researchers analysed personality data from more than 3.2 million Americans across 349 metropolitan regions and compared it with the early spread of three digital platforms: Airbnb, Uber and Flickr. Across all three, regions with more psychologically open populations showed stronger early adoption, even after the researchers accounted for economic, demographic, infrastructural, social and geographical differences.

Openness as ‘invisible social infrastructure’

Psychological openness is one of the established Big Five personality traits (Openness, Conscientiousness, Extraversion, Agreeableness and Neuroticism). It includes curiosity, receptiveness to new ideas and experiences, and a willingness to engage with unfamiliar or unconventional things.

The researchers describe regional psychological openness as a kind of ‘invisible social infrastructure’: something that cannot be seen in the way that roads, universities or broadband networks can, but which may nevertheless influence how readily people engage with something new.

‘What stood out was the consistency of the pattern,’ says Prof. Tobias Ebert of the University of St Gallen. ‘Psychological openness was the only factor reliably associated with adoption across all of the three innovations we studied.’

The differences between regions were substantial. The proportion of people classified as highly open ranged from around 21% to 48% across the metropolitan areas studied. Early adoption also varied sharply: regions such as San Francisco, Portland and Austin repeatedly appeared among the strongest adopters, while El Paso, Flint and Jackson were among the lowest.

Why does openness matter?

The finding may be particularly relevant during the uncertain early stages of an innovation. When Airbnb launched, people had to be willing to let strangers stay in their homes. Uber required people to offer rides in their own cars. Early social-media platforms such as Flickr depended on people creating and publicly sharing content before this behaviour was commonplace.

In other words, users were not simply buying a new product. They were being asked to adopt unfamiliar behaviours – and, in the case of platforms, their participation helped create the service itself.

‘Someone has to be willing to try a new behaviour before everyone else regards it as normal,’ says Prof. Martin Obschonka of the Amsterdam Business School at the UvA. ‘This can be especially important for platforms, which need enough local users, hosts, drivers or content creators to generate the network effects that make them useful and viable’

A new factor in innovation ecosystems

The findings add a behavioural dimension to the way innovation ecosystems are usually understood. Regions seeking to encourage innovation typically focus on infrastructure, investment, universities, entrepreneurs, skilled workers and access to capital. The study does not suggest that these factors are unimportant. Instead, it suggests that the psychological composition of a population may also shape how readily a radically new activity gains an early foothold.

For businesses, local behavioural receptivity could offer an additional clue when deciding where to introduce unfamiliar technologies or business models. For policymakers, differences in adoption may not always be explained by infrastructure or investment alone.

What about AI?

The researchers stress that their study did not examine AI adoption, and that its results should not be directly extrapolated to AI. However, they argue that the broader question is increasingly relevant as new technologies emerge.

‘We did not study AI adoption, so we should be careful not to extrapolate,’ says Obschonka. ‘But when a genuinely new technology arrives, its future does not depend only on the technology itself. It also depends on whether people are ready to experiment with it.’