Monday, March 10, 2025

 

‘You don’t just throw them in a box.’ Archaeologists, Indigenous scholars call on museums to better care for animal remains




University of Colorado at Boulder
Bison collection 

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Lakota elder Milo Yellow Hair looks over bison skulls stored in the CU Museum of Natural History. (Credit: Casey Cass/CU Boulder)

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Credit: Casey Cass/CU Boulder




Two years ago, Chance Ward began opening boxes of horse remains that had been shipped to the University of Colorado Museum of Natural History from other institutions around the country. What he saw made his heart sink.

At the time, Ward was a master’s student in Museum and Field Studies at CU Boulder. The researcher, who had grown up riding horses, was taking part in a large-scale study exploring the history of these iconic animals in the American West. But when he looked inside the packages, he sometimes found bones in disarray—horse remains were in bags and boxes with little care or cushioning and had banged together in transit, sometimes causing damage.

Ward is a member of the Cheyenne River Sioux Tribe in South Dakota and a member of the Mnicoujou and Hunkpapa bands of the Lakota Nation. Lakota traditions, like those of many other Native American groups in the West, place animals at the center of their spirituality and view them as relatives.

“You care for horses. You not only feed and water them, but you connect with them on a personal, spiritual level,” Ward said. “Even when they pass on, you still respect and honor them as non-human relatives. You don't throw them in plastic bags or boxes.”

Today, he’s leading a team of archaeologists and Indigenous scholars urging museums around the country to take a more respectful approach to caring for animal remains. It’s an example of what the researchers call “cultural humility,” an approach to engaging with different cultures that emphasizes self reflection, lifelong learning and recognizing power imbalances. The team says that museums must partner with Native American groups to rethink how they catalogue, store and display remains.

The group laid out its approach in a paper published this month in the journal Advances in Archaeological Practice.

“Now that Native people are getting into the museum field more, there’s been a greater understanding of things like representation and having control over our own cultures and issues that affect our cultures,” Ward said. “The old way of doing archaeological methods is outdated and in need of fresh perspectives.”

William Taylor, curator of archaeology at the CU museum and the study’s senior author, agreed. In 1990, U.S. Congress passed the Native American Graves Protection and Repatriation Act (NAGPRA). It requires institutions that receive federal funding to return human remains, sacred objects and more to Indigenous people.

But NAGPRA, which often doesn’t apply to animal remains, is not the only principle that should guide how museums act, said Taylor, author of the 2024 book Hoof Beats: How Horses Shaped Human History.

“We need to reframe the way we think about museums. Are they places where we treat archaeological objects as inanimate things?” he said. “Or are they places of living stewardship that come with responsibilities, some of which include connecting and listening?”

Life on horseback

Ward, who now serves as the NAGPRA Coordinator for the State of Colorado and Office of the State Archaeologist, grew up on the Cheyenne River Reservation where horses were an essential part of his life. His father’s family owned a ranch, and every spring, Ward helped to round up cattle on horseback. He remembers when his dad first put him on a horse at age 8.

“There was no riding lesson. It was just ‘get on, and let’s go,’” Ward said. “I remember telling myself, ‘I’m not going to fall off no matter what’ because I didn’t want to disappoint anyone.”

Historically, the field of archaeology hasn’t always treated animals with respect. During many early digs, researchers overlooked the animal bones they found during their work. They often removed those objects from their cultural context and even threw them away.

Ward wants to change that. He noted that there’s no one-size-fits-all approach for how to treat the remains of horses, bison and more. There are currently more than 570 federally recognized Tribes in the U.S. and more recognized by the states, all of which hold their own distinct views on the living world.

But museums can begin by thoroughly documenting all the animal remains they have in their collections. Many institutions, Ward said, don’t even know what kinds of bones they have hiding in boxes and cabinets in rooms away from the public eye.

Study co-author Jimmy Arterberry, a tribal historian for the Comanche Nation in Oklahoma, sees the new paper as an urgent call to action. He acknowledges that most museums today are short on funding and staff. But he says institutions can still do a lot right now to change how they handle animal remains.

“Why are you keeping them if you’re not going to care for them?” Arterberry said.

Bison herd

Arterberry and Ward agree that the most important thing museums can do today is listen to Native American groups. NAGPRA requires museums to obtain consent from Native American nations around how these institutions store, house and treat many archaeological collections.

The CU museum is committed to strengthening relationships and honoring knowledge. Taylor and his colleagues began with one of the museum’s most extensive collections: In the 20th century, archaeologists at the museum unearthed thousands of bison bones from an arroyo near the tiny town of Kit Carson, Colorado. Ancient peoples had hunted and butchered the animals following the end of the last Ice Age roughly 11,000 years ago. Archaeologists originally stored nearly 200 bison skulls in plaster or burlap casts. But decades later, many of those casts were fragmenting, threatening the remains inside.

Over several months, the team transferred the skulls to stable and open casts and arranged them safely on shelves in a new storage space. In February 2024, a delegation of Lakota elders traveled to the CU Boulder campus to meet with researchers and to see the bison collection. Chief Harold Left Heron spoke and sang a blessing in the Lakota language as he stood next to the remains.

“One of their suggestions was to keep these animals together as a herd in the museum, as they might have been in life,” Taylor said. 

Going forward, he said, the museum will continue seeking out opportunities to build community perspectives into the care of ancient animal remains.

Ward said that anyone can learn a lot by forming interpersonal relationships with animals like his own favorites, horses.

“Just being there with them, standing next to them, feeling them physically and spiritually is very powerful,” he said. “It takes both sides, the horse and human, to connect with each other and be comfortable—but not so comfortable that we dominate them.”


Lakota elders share their thoughts with William Taylor amid a collection of roughly 200 bison skulls on the CU Boulder campus.

Credit

Casey Cass/CU Boulder


Chance Ward with a horse skull at the CU Museum of Natural History.

Credit

Samantha Eads


Other co-authors of he new study include Christina Cain, former collections manager at the CU Museum of Natural History; Dr. Joseph Aguilar at the Tribal Historic Preservation Office for Pueblo de San Ildefonso in New Mexico; Natalie Patton, a graduate of the CU Museum of Natural History; and Dr. Emily Lena Jones at the University of New Mexico.

 MONOPOLY CAPITALI$M


A study by the UJI warns about the high concentration in the telecommunications sector and digital platforms in Spain



The report Communication, media and internet concentration in Spain, 2019-2022, which reveals a total increase of 6.04% in the media and telecommunications industry and a decrease in the traditional media sectors



Universitat Jaume I

Professor Jéssica Izquierdo Castillo leads the team that produced the report "Communication, media and internet concentration in Spain, 2019-2022" 

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The report on media and internet concentration in Spain, which is part of the Global Media International Project (GMICP) research project, is led by Jessica Izquierdo Castillo, professor at the Universitat Jaume I in Castelló, and includes the participation of professor Juan Carlos Miguel de Bustos from the University of the Basque Country and researcher Raquel Adanero from the UJI.

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Credit: Universitat Jaume I




The media economy in Spain is undergoing an unprecedented transformation, marked by the accelerated growth of digital services and market concentration, according to the report Communication, media and internet concentration in Spain, 2019-2022, which reveals a total increase of 6.04% in the media and telecommunications industry and a decrease in the traditional media sectors.

The report on media and internet concentration in Spain, which is part of the Global Media International Project (GMICP) research project, is led by Jessica Izquierdo Castillo, professor at the Universitat Jaume I in Castelló, and includes the participation of professor Juan Carlos Miguel de Bustos from the University of the Basque Country and researcher Raquel Adanero from the UJI.

Digitisation and the rise of on-demand content

Online video services have experienced growth of 189.1% during the period from 2019 to 2022. Others such as digital advertising (+49.5%), video games (+36%) and online music (+24.2%) also contribute to the growth of the digital economy. Users' preference for on-demand content has redefined the market, consolidating the position of the giants Netflix, Amazon Prime Video and Disney+.

By contrast, the traditional telecommunications sectors have lost ground: revenues from wireless services fell by 11.7%, while those from fixed lines fell by 28.7%. The only exception within this segment is the growth of internet providers (12.4%), driven by the demand for faster fibre optic connections. This telecommunications market continues to be dominated by Telefónica, Orange, Vodafone and MásMóvil. The merger of the latter two in 2024 has reshaped competition and reinforced concentration in the sector.

 

An increasingly concentrated market

Despite digital diversification, the report warns that market concentration remains high in key sectors. Linear television, although undergoing transformation, maintains an oligopoly led by Mediaset, Atresmedia and Radiotelevisión Española. In the press, the groups Vocento, Unidad Editorial and Prisa dominate the market, while radio is concentrated around Prisa (Cadena SER) and Ábside Media (COPE).

In the internet sector, the tech giants Google and Meta continue to accumulate the greatest concentration of power in the key areas of digital advertising and social networks.

Challenges and opportunities

Researchers emphasise that this concentration poses challenges for competition and media diversity, which requires a response from regulators to market imbalances. The future of the Spanish media and internet industry will depend on its ability to balance innovation and competition, in a way that guarantees a diverse and sustainable ecosystem in the digital age.

 

 

Intelligent covert communication: a leap forward in wireless security




Higher Education Press
Framework of a GAN. 

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Framework of a GAN. 

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Credit: Zan Li et al.




In the ever-evolving landscape of wireless communication, security remains a paramount concern. A recent study published in Engineering delves into the realm of intelligent covert communication, exploring its latest advancements and future research trends.

Covert communication, also known as low probability of detection (LPD) communication, is a technique that aims to conceal the existence of communication, thereby safeguarding private information. As the volume of private data transmitted via wireless systems continues to soar in the big data era, the need for robust security measures has become more pressing than ever. Unlike traditional encryption and physical layer security techniques, covert communication focuses on hiding the communication behavior itself, adding an extra layer of protection.

The researchers first introduced the basic concepts and performance metrics of covert communication. A typical system model involves a sender (Alice) transmitting data to a recipient (Bob) without being detected by an adversary (Willie). Performance is measured through metrics such as error detection probability, detection probability, covert outage probability, and effective covert rate. These metrics help in evaluating the effectiveness of covert communication systems and designing better strategies.

The paper then reviewed existing covert communication techniques across different domains. In the time domain, random time-slot selection and time-hopping techniques add an element of randomness to evade detection, although they come with issues like increased transmission delay. Frequency domain techniques, such as spread spectrum and frequency-hopping, reduce the signal power density, making it harder for eavesdroppers to detect the signal. However, they face limitations due to spectrum resources and receiver sensitivity.

Spatial domain technologies, including beamforming, millimeter wave, terahertz communication, and frequency diverse array (FDA), enhance covertness by controlling signal propagation direction and leveraging the unique properties of high-frequency waves. In the power domain, power adaption and artificial noise methods introduce uncertainty to prevent detection, but they pose challenges for legitimate receivers. In the modulation domain, random modulation schemes and waveform overlay techniques improve covertness, with optimal probabilistic constellation shaping further enhancing the covert rate.

Looking ahead, the study identified several future research directions. Intelligent cooperative covert communication, which uses generative adversarial networks (GANs) and deep reinforcement learning (DRL), aims to adapt to complex and dynamic wireless environments. However, it faces challenges in terms of computational complexity. Intelligent parasitic covert communication, which involves spectral superposition, requires careful management of inter-system interference. Multidimensional covert waveform design holds promise in meeting the demands of complex electromagnetic environments but is hampered by high transceiver complexity.

The development of active detection by adversaries also calls for enhanced cognitive capabilities in covert communication systems. Additionally, integrating sensing and communication (ISAC) in covert communication shows potential, but it needs to address issues related to information leakage and mutual interference.

This research provides a comprehensive overview of intelligent covert communication, highlighting its significance in securing future wireless networks. As technology continues to advance, these findings will guide the development of more secure and efficient covert communication methods.

The paper “Intelligent Covert Communication: Recent Advances and Future Research Trends,” authored by Zan Li, Jia Shi, Jiangbo Si, Lu Lv, Lei Guan, Benjian Hao, Zhuangzhuang Tie, Danyang Wang, Chengwen Xing, Tony Q.S. Quek. Full text of the open access paper: https://doi.org/10.1016/j.eng.2024.12.007. For more information about the Engineering, follow us on X (https://twitter.com/EngineeringJrnl) & like us on Facebook (https://www.facebook.com/EngineeringJrnl).

 

Limiting screen time protects children’s mental health



University of Jyväskylä - Jyväskylän yliopisto
Limiting screen time protects children’s mental health 

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Limiting screen time protects children’s mental health

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Credit: Eero Haapala




A recent Finnish study suggests that limiting screen time and promoting physical activity from childhood may help safeguard mental health in adolescence. The findings are particularly significant given that mental health problems affect up to 30% of young people and pose a growing societal challenge.

The study, conducted by the Faculty of Sport and Health Sciences at the University of Jyväskylä and the Institute of Biomedicine at the University of Eastern Finland, followed 187 adolescents over an eight-year period. Researchers found that children who spent more time on screens –especially mobile devices – were more likely to experience higher levels of stress and depressive symptoms in adolescence. 

Conversely, higher levels of physical activity and participation in organized sports were associated with lower stress and fewer depressive symptoms. However, the link between physical activity and depressive symptoms was weaker than that of screen time and depressive symptoms. Adolescents with both high screen time and low physical activity had the highest levels of stress and depressive symptoms.

“Several international, evidence-based recommendations suggest that the leisure screen time of children and adolescents should be limited to two hours per day.” 

 “Personally, I think that even this figure is high, as it amounts to almost one month of screen time per year”, says Senior Lecturer Eero Haapala from the Faculty of Sport and Health Sciences at the University of Jyväskylä. 

Balancing physical activity and screen time 

These findings emphasize the need to promote healthy lifestyle habits early in life. Encouraging children to engage in physical activity and setting reasonable limits on screen time could play a crucial role in preventing mental health challenges later in life.

“The modern sedentary lifestyle, with high screen exposure, challenges the mental health of children and adolescents,” says Dr Eero Haapala. 

“Recent discussions have rightly focused on screen time and social media, but I hope our findings encourage adults in young people’s lives to promote a broad spectrum of healthy habits – especially by balancing screen time and physical activity.”

“Achieving change requires collaboration,” Haapala emphasises. 

“Society as a whole – from families to policymakers – must invest in promoting healthy lifestyles for children and adolescents by ensuring balanced screen time, sufficient physical activity, adequate sleep, and a nutritious diet.” 

The PANIC Study is part of the Metabolic Diseases Research Community at the University of Eastern Finland. The research community is dedicated to investigating major cardiometabolic diseases. By leveraging genetics, genomics, translational research, and lifestyle interventions, the community aims to provide robust evidence on disease mechanisms and advance early diagnosis, prevention, and personalized treatment. The research community consists of 20 research groups, spanning basic research to patient care.

 

Worldwide study finds high rates of depression and anxiety in people with chronic pain





Johns Hopkins Medicine





A novel analysis of more than 375 published studies concluded that the association between chronic pain and rates of depression and anxiety is staggering. The study, led by investigators at Johns Hopkins Medicine found that 40% of adults with chronic pain experienced “clinically significant depression and anxiety.” Among those most at risk, the analysis showed, were women, younger adults and people with fibromyalgia.

For decades, research has provided evidence of clear links between pain and mood, but the new study’s leaders say the co-occurrence levels they identified pose a significant public health concern that should require routine screening in clinical settings, better access to specialty care and development of innovative therapies.

Historically, studies show that people with chronic pain and both depression and anxiety lack consistent access to specialized pain clinics focused on acute pain, and are routinely excluded from clinical trials for pain management.

Chronic pain, described as pain that persists for greater than three months, can be a debilitating condition. According to the Centers for Disease Control and Prevention, an estimated 20.9% of U.S. adults (51.6 million people) experienced chronic pain in 2021. Patients who have chronic pain exhibit symptoms of depression and anxiety. In fact, studies show that 20–40% of adults with chronic pain have co-occurring depression and anxiety.

"Right now, we have effective psychological treatments for depression and anxiety, and effective psychological treatments for chronic pain, but these treatments are often siloed. In fact, many studies exclude people who with chronic pain who have depression or anxiety from clinical trials. We need integrated treatments that address chronic pain and mental health together,” says Rachel Aaron, Ph.D., first author of the study and assistant professor of physical medicine and rehabilitation at the Johns Hopkins University School of Medicine.

For the new study, researchers analyzed data published in 376 studies with a focus on estimating the prevalence of depression and anxiety in people with chronic pain around the world. Their findings, which compared rates of depression and anxiety in people with and without chronic pain, were based on clinical symptoms in medical records; criteria for anxiety and depression found in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5); and consideration and adjustment of factors such as geographic location, clinical versus community settings for data gathering, age, gender and pain duration.

The findings, published Mar. 7 in JAMA Network Open, indicate that adult patients with chronic pain were more likely to have clinical symptoms of depression and anxiety and that elevated depression and anxiety may be unique to chronic pain, rather than being attributed solely to having a medical condition.

“People who have chronic pan are more likely than those who don’t to have depression and anxiety. This is a significant public health problem that should be addressed with routine screening of depression and anxiety in clinical settings and the development of novel treatments that target their comorbidity. At the same time, this is also a story of resilience. Most people with chronic pain do not have depression or anxiety. These results challenge the ableist narrative that chronic pain is inherently depressing and remind us that people with chronic pain can and do lead psychologically healthy, fulfilling, lives.”

The researchers used data from studies conducted between 2013–2023 that included 347,468 adult patients with chronic pain from 50 countries. The average age of the patients was 52. A total of seven depression and anxiety disorder symptoms were studied in the patients.

Of the seven depression and anxiety disorder symptoms, researchers discovered that the highest rates shown in patients with chronic pain were from clinical symptoms of depression and clinical symptoms of anxiety at 39% and 40% respectively. The rates of DSM 5 diagnoses were lower, including major depressive disorder (37%), persistent depressive disorder (6%), general anxiety disorder (17%), panic disorder (8%), and social anxiety disorder (2%).

These results showed that though, these findings could not directly speak to the temporal relationships between chronic pain and depression and anxiety, adult patients with chronic pain were more likely to have clinical symptoms of depression and anxiety. More specifically, the findings provide evidence that psychological distress and adverse life experiences increase risk for chronic nociplastic pain, a type of chronic pain that is caused by changes in how the body processes pain signals in the brain and spinal cord.

With limited screening for depression and anxiety in clinical settings where chronic pain is treated, it has become increasingly important to develop innovative treatments targeting patients with both chronic pain and co-occurring depression and anxiety in an effort to promote positive outcomes. 

Amid politically divisive debate on role of U.S. police in violence against Black citizens, AI-aided study of local news finds media criticism of police has not risen or become more partisan over last decade




Carnegie Mellon University





In the last decade, high-profile incidents of police violence against Black citizens in the United States—most notably the 2020 murder of George Floyd­­­­—have sparked protests and public debate on misconduct and racial bias in policing. These events received substantial news coverage, becoming highly politicized and leading to a perception that media have become more critical and partisan in their treatment of police.

While there is some support for this perception in national news, we know less about local outlets that cover police departments regularly. In a new study, researchers analyzed a decade of local news coverage, finding that local media criticism of the police has not increased significantly or become more politically polarized over the past 10 years.

The study found that while local media criticism spiked after high-profile police killings, these events did not produce sustained rises in negative police news. Furthermore, there were only small differences in coverage between news outlets in more conservative and in more liberal cities, undermining the idea that local news outlets cater to the politics of their audiences.

The study, by researchers at Carnegie Mellon University and the Rochester Institute of Technology, used AI language models and human readers across the political spectrum to measure criticism of the police in 1.3 million news excerpts referencing the police from 10 politically diverse U.S. cities from 2013 to 2023. The study is published in the Proceedings of the National Academy of Sciences.

“Generally speaking, our study found that local media criticism of the police has remained remarkably steady, which contrasts with common perceptions and trends at the national level,” says Logan Crowl, a PhD student in public policy and machine learning at Carnegie Mellon’s Heinz College, who coauthored the study. “For many Americans, local news shapes how they see their local police department; when we look at 10 years of that reporting across the country, we see that it is essentially no more critical of the police or politically polarized than it was a decade ago.”

In the study, researchers first surveyed 500 representative U.S. residents to gauge their views about reporting on police. They found that 54% thought local news reporting had become more critical of the police, while only 19% thought local reporting had become less critical. To test the reality of this perception, researchers constructed a data set of news articles published from 2013 to 2023 by local outlets in 10 U.S. cities; the cities represented an equal number of Republican-leaning (Dallas-Fort Worth, San Diego, Jacksonville, Oklahoma City, and Omaha) and Democratic-leaning (Houston, Denver, Tampa, Nashville, and Pittsburgh) metropolitan areas, and were comparable in population, geographic region, and racial composition.

Using Google News and Newsbank, researchers identified relevant news articles published in each of the cities, finding more than 250,000 articles and stories published or aired by about 200 different local outlets, primarily daily newspapers and TV stations.

To detect shifts in coverage, researchers had Republicans, Independents, and Democrats read a sample of these police news excerpts and assess whether each piece of text was critical or supportive of police effectiveness or racial bias in policing. Then, researchers trained large language models—an artificial intelligence method for interpreting text—to mimic these human judgments to measure criticism for the full police news data set.

“Our study sought to boost understanding of polarization in journalism, including the differences between national and local coverage,” explains Daniel Nagin, professor of public policy and statistics at Carnegie Mellon’s Heinz College, who coauthored the study. “The results suggest that local media coverage of the police has not succumbed to the partisanship that objective reporting aims to avoid.”