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The latest science news on archaeology, fossils, mathematics, and science technology from Phys.org

1. The history of erasing Black cemeteries in the United States01:30[-/+]

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The burying ground looks like an abandoned lot.

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2. Can AI keep students motivated, or does it do the opposite?01:30[-/+]

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Imagine a student using a writing assistant powered by a generative AI chatbot. As the bot serves up practical suggestions and encouragement, insights come more easily, drafts polish up quickly and feedback loops feel immediate. It can be energizing. But when that AI support is removed, some students report feeling less confident or less willing to engage.

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3. Is it wrong to have too much money? Your answer may depend on deep-seated values and your country's economy00:20[-/+]

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Across cultures, people often wrestle with whether having lots of money is a blessing, a burden or a moral problem. According to our new research, how someone views billionaires isn't just about economics. Judgment also hinges on certain cultural and moral instincts, which helps explain why opinions about wealth are so polarized.

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4. Do more likes lead to more clicks?00:06[-/+]

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A new Journal of Marketing study sheds light on the dynamics of likes in social advertising and their impact on user engagement.

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5. Survey: Californians don't know cannabis driving laws00:05[-/+]

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A new study from University of California San Diego has found that while a third of Californians use cannabis regularly, there are significant gaps in knowledge around cannabis use and driving. The researchers found that even six years after the legalization of recreational cannabis use, adults in California demonstrate mixed awareness and knowledge of driving-related laws and regulations.

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6. EU ambiguity on Western Sahara frozen conflict is a 'glaring source' of vulnerability for Sahrawis, study showsСр, 22 окт[-/+]

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The European Union's legal ambiguity on the Western Sahara frozen conflict is an increasingly glaring source of vulnerability for Sahrawis, a new study shows.

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7. Human ingenuity outpaces AI in finding new 'kissing number' boundsСр, 22 окт[-/+]

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How many coins can touch one coin, or how many basketballs can "kiss" one basketball at the same time? This seemingly playful question lies at the heart of the famous kissing number problem, a mathematical riddle that becomes almost supernaturally difficult to work out in dimensions beyond 4D. Despite its whimsical name, similar problems have practical applications in areas such as mobile communications and satellite navigation.

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8. Radiocarbon dating of Egyptian artifacts puts Thera (Santorini) volcanic eruption prior to Pharaoh AhmoseСр, 22 окт[-/+]

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One of the largest volcanic eruptions in the last 10,000 years took place at the Greek island of Thera (Santorini) in the Aegean Sea, but its dating during the late 17th or 16th century BCE remained controversial. Volcanic ash from the eruption spread over a large area in the eastern Mediterranean region. One of the lingering questions in archaeology was how this huge geological event lined up with royal Egyptian chronologies.

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9. Ancient DNA provides clues to intestinal parasites that plagued early MexicoСр, 22 окт[-/+]

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DNA within dried feces dating from more than 1,000 years ago provides valuable insights into the pathogens that plagued ancient Mexican peoples, according to a study published in PLOS One by Drew Capone of Indiana University, U.S., and colleagues.

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10. The economics of attention dominate modern-day active tradingСр, 22 окт[-/+]

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In 2021, the stock market valuation of GameStop skyrocketed thanks to a social media frenzy. It heralded the rise of the so-called "meme" stock, but also a rise in a particular kind of trading, one driven more by the attention economy than by inherent value in an investment, according to new Northeastern University research published on SSRN.

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11. Q&A: Expert discusses if unintentional bias is changeableСр, 22 окт[-/+]

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In a new paper, University of Illinois Urbana-Champaign psychology professor Benedek Kurdi proposes a fresh approach to confronting implicit, or unintentional, bias in diverse organizations. He spoke with News Bureau life sciences editor Diana Yates about the problems associated with efforts to "train" the bias out of people and offers practical guidelines for those hoping to establish a more inclusive, welcoming atmosphere in their organizations. His report appears in the journal Policy Insights from the Behavioral and Brain Sciences.

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12. A 15th-century Inca building was built for sound—researchers are working to understand whyСр, 22 окт[-/+]

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The Inca empire is renowned for its architecture; its buildings were intricately designed and extraordinarily durable.

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13. How forensic analysis and traditional knowledge reveal the story of a unique boomerangСр, 22 окт[-/+]

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Boomerangs are an iconic symbol of Australia. Known internationally for their unique curved shape and ability to return when thrown, they are an example of the remarkable engineering skills of Australia's First Peoples.

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14. The politics of milk: How a simple drink got caught up in power, culture and identityСр, 22 окт[-/+]

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Milk is one of the most familiar things in the world—comforting, wholesome, ordinary. But beneath this common perception lies something far more complicated.

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15. Giant wooden marker post dates Cahokia's political and economic peakСр, 22 окт[-/+]

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Dr. Nicholas Kessler and his colleagues examined the largest known marker post from the ancient North American city of Cahokia. Their study is published in PLOS One.

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16. Research shows that land can't buy security for young KenyansСр, 22 окт[-/+]

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An anthropologist from The University of Manchester has uncovered the hidden struggles of young men on the edges of Nairobi, who inherit land but lack the means to turn it into the financial security they desperately need.

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17. Study finds community violence exposure influences behavior in schoolСр, 22 окт[-/+]

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Children sometimes misbehave at school for a variety of reasons. But new research from the University of Mississippi sheds light on how exposure to violence outside of school may lead some children to act out in the classroom.

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18. Study highlights lack of PR coursework in sports media programsСр, 22 окт[-/+]

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Sports are a massive—and growing—economic force in the United States and around the globe, opening new opportunities for careers.

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19. How grassroots logistics networks fed New Yorkers during COVID-19 crisisСр, 22 окт[-/+]

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Grassroots logistics networks provided food and essential goods to New Yorkers who fell through the cracks of conventional supply chains during the COVID-19 pandemic, offering important lessons for engineers designing the next generation of distribution technologies, according to new research from NYU Tandon and the University of Toronto.

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20. Researchers develop new approach to exploring the intersection of religion and medicineСр, 22 окт[-/+]

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An interdisciplinary team of researchers has developed a novel research model to enhance investigations conducted at the intersection of religion and medicine.

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21. Dungeons & Dragons is more than a game, leisure expert saysСр, 22 окт[-/+]

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For most people, Dungeons & Dragons (D&D) is simply a niche fantasy table-top game. But around tables cluttered with dice, maps and character sheets, players are doing far more than playing. They're engaging in leisure. Serious leisure, to be exact. Sociologists define serious leisure as a hobby that demands skill, commitment and personal fulfillment, and FIU's Emily Messina says D&D fits the bill perfectly.

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22. Historian traces transformation of US nursing homes into big businessСр, 22 окт[-/+]

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In postwar America, as suburbs spread and federal social welfare programs expanded, one underexamined building type quietly became a fixture of the American health care landscape: the nursing home.

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23. Charts can be social artifacts that communicate more than just dataСр, 22 окт[-/+]

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The degree to which someone trusts the information depicted in a chart can depend on their assumptions about who made the data visualization, according to a pair of studies by MIT researchers.

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24. Who goes to the ballet? Education and social connections matter more than income, study findsСр, 22 окт[-/+]

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Why do some people regularly attend the opera, visit art galleries, or go to classical music concerts—while others rarely, if ever, do?

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25. How land use policies can contribute to racial segregation in communitiesСр, 22 окт[-/+]

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New research published in International Studies of Economics sheds light on an important but often overlooked driver of racial segregation in housing: minimum lot size zoning policies, or local regulations requiring a minimum amount of land for a property.

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26. Why we keep hunting ghosts—and what it says about usСр, 22 окт[-/+]

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In 1874, renowned chemist Sir William Crookes sat in a darkened room, eyes fixed on a curtain over an alcove. The curtain twitched, and out came a glowing ghost of a young woman, dressed in a white shroud. He was entranced.

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27. How screening students for psychopathic and narcissistic traits could help prevent cyberbullyingСр, 22 окт[-/+]

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The federal government has just released an expert review to try and prevent bullying in schools. One of the greatest areas of concern is cyberbullying, which is alarmingly common among young people.

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28. Targeted support boosts engagement and perseverance among repeat programming studentsВт, 21 окт[-/+]

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A team of researchers at the Universitat Oberta de Catalunya (UOC) has developed and applied a targeted intervention for repeating students to ascertain why a significant proportion fail again and to identify strategies to help reverse this trend. The project was carried out as part of a research project with almost a hundred students on the Fundamentals of Programming (CS1) course, which in addition to being among the most demanding, has one of the highest failure rates on the Bachelor's Degree in Computer Engineering program.

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29. Scenario-based method enables businesses to rank emissions-reduction strategies by cost and impactВт, 21 окт[-/+]

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Compile an emissions balance sheet, evaluate climate-protection measures and implement the most efficient of these first: Researchers from three Fraunhofer institutes have developed a method with which companies from all sectors are able, based on scenarios, to evaluate their climate-protection measures in accordance with ecological and economic criteria.

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30. Do we need to see to gesture? How blind people express concepts without visionВт, 21 окт[-/+]

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A team of researchers at the Max Planck Institute for Psycholinguistics recently set out to investigate whether people who are blind gesture like sighted people when talking about the world, and how their unique perceptual experience might influence the way they express different kinds of concepts.

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