Environment
Global measures consistently underestimate food insecurity: 1 in 5 who suffer from hunger may go uncounted
International humanitarian aid organizations rely on analyses from the Integrated Food Security Phase Classification (IPC) system, a global partnership that monitors and classifies the severity of food insecurity to help ...
18 minutes ago
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Swedish freshwater bacteria reveal lost genes and unexpected photosynthesis abilities
Bacteria are among the most diverse and ancient forms of life on Earth. Yet, much of what is known about them comes from a small group of species, mostly studied for their roles in human health.
Evolution
18 minutes ago
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Sea reptile's tooth shows that mosasaurs could live in freshwater
Mosasaurs, giant marine reptiles that existed more than 66 million years ago, lived not only in the sea but also in rivers. This is shown by new research based on analyses of a mosasaur tooth found in North Dakota and believed ...
Paleontology & Fossils
3 hours ago
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Earth's atmosphere may help support human life on the moon
The moon's surface may be more than just a dusty, barren landscape. Over billions of years, tiny particles from Earth's atmosphere have landed in the lunar soil, creating a possible source of life-sustaining substances for ...
Space Exploration
14 hours ago
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Polar bears may be adapting to survive warmer climates, says study
New research reveals a link between rising temperatures and changes in polar bear DNA, which may be helping them adapt and survive in increasingly challenging environments.
Plants & Animals
9 hours ago
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A new species of tiny orange frog discovered in Brazil's cloud forests
Despite the vast numbers of animal species already identified, the natural world is still capable of springing a few surprises. Deep in the cloud forests of the Serra do Quiriri mountain range in the southern Brazilian Atlantic ...
Which gut microbes matter most? Large study ranks bacteria by health and diet links
The gut microbiome has been a rising star in the world of health science over the last several years, garnering interest from both researchers and the general public. This is mostly due to its connection to general health ...
How a simple slipknot can help surgeons tie the perfect suture
In surgical procedures, the last knot of a suture is crucial because it must hold the wound firmly in place to allow proper healing. But many surgeons struggle to apply the perfect tension. Tie it too tightly, and it can ...
GPT‑5.2: OpenAI beefs up GPT models in AI race with Google
OpenAI released its latest artificial intelligence models on Thursday, shrugging off worries about how it will cash in on massive spending in its technology race with Google.
Machine learning & AI
44 minutes ago
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The Future is Interdisciplinary
Find out how ACS can accelerate your research to keep up with the discoveries that are pushing us into science’s next frontier
Medical Xpress
Psoriasis study shows link between fat metabolism and skin inflammation for first time
How CAR T-cell therapies target myeloma at the molecular level
AI tool can detect missed Alzheimer's diagnoses while reducing disparities
Short-term stress primes immune cells for action in animal models
Rats may seek cannabis to cope with stress
CAR-T therapy yields long-term survival for patients with lymphoma
Enzyme linked to myelin damage may hold key to neurodegenerative diseases
Tech Xplore
GPT‑5.2: OpenAI beefs up GPT models in AI race with Google
AI can pick up cultural values by mimicking how kids learn
Simple teflon coating boosts hydrogen production efficiency by 40%
Squashing 'fantastic bugs' hidden in AI benchmarks
New method improves the reliability of statistical estimations
Fairness in AI: Study shows central role of human decision-making
Time magazine names 'Architects of AI' as Person of the Year
AI adoption changes how scientists work, collaborate and publish new findings
Amazon bets on color and AI with its priciest Kindle to date
El Salvador teams up with Elon Musk's xAI to bring AI to 5,000 public schools
AI's $400 bn problem: Are chips getting old too fast?
Dual substitution induces room-temperature ferromagnetism and negative thermal expansion in BiFeO₃
Using a dual-cation substitution approach, researchers at Science Tokyo introduced ferromagnetism into bismuth ferrite, a well-known and promising multiferroic material for next-generation memory technologies. By replacing ...
Condensed Matter
9 hours ago
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Astronomers examine nuclear star cluster of nearby galaxy Messier 74
By analyzing the data from the PHANGS-MUSE survey, an international team of astronomers has inspected a nuclear star cluster of the nearby large spiral galaxy Messier 74. The new study presented Dec. 3 on the arXiv pre-print ...
Ultra-hot super-Earth shows signs of thick atmosphere despite extreme conditions
Researchers using NASA's James Webb Space Telescope have detected the strongest evidence yet for an atmosphere on a rocky planet outside our solar system.
Astronomy
19 hours ago
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81
All-optical modulation in silicon achieved via an electron avalanche process
Over the past decades, engineers have introduced numerous technologies that rely on light and its underlying characteristics. These include photonic and quantum systems that could advance imaging, communication and information ...
The monster hiding in plain sight: JWST reveals cosmic shapeshifter in the early universe
In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big Bang—a cosmic Jekyll and Hyde that looks like any other galaxy when viewed in visible and even ultraviolet ...
Astronomy
19 hours ago
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New window insulation blocks heat, but not your view
Physicists at the University of Colorado Boulder have designed a new material for insulating windows that could improve the energy efficiency of buildings worldwide—and it works a bit like a high-tech version of Bubble ...
Engineering
12 hours ago
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Ear piercings marked one of the earliest Maya rites of passage, research shows
In a recent study, Ph.D. candidate Yasmine Flynn-Arajdal studied iconographic representations of children in the Classic (ca. 250–950 AD) and Post-classic (ca. 950–1539 AD) imagery, as well as in ethnohistoric and ethnographic ...
Tiny optical modulator could enable giant future quantum computers
Researchers have made a major advance in quantum computing with a new device that is nearly 100 times smaller than the diameter of a human hair.
Optics & Photonics
12 hours ago
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From mind-controlling tech to clinical therapy: An optogenetics roadmap
Researchers at the University of Geneva, together with colleagues in Switzerland, France, the United States and Israel, describe how optogenetic control of brain cells and circuits is already steering both indirect neuromodulatory ...
Proton therapy shows survival benefit in Phase III trial for patients with head and neck cancers
A study published in The Lancet showed a significant survival benefit for patients with oropharyngeal cancers who were treated with proton therapy (IMPT) compared to those treated with traditional radiation therapy (IMRT).
Oncology & Cancer
10 hours ago
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Musk signals plan to launch IPO for SpaceX
Elon Musk has signaled plans to soon seek a public stock listing of SpaceX, confirming a report that links the strategic shift to a near-term need for more capital.
'In her prime': Rare blooming of palm trees in Rio
An extraordinary botanical spectacle is drawing crowds in Rio de Janeiro: several talipot palm trees, planted more than six decades ago, are blooming for the first—and last—time in their lives.
Indonesia floods were 'extinction level' for rare orangutans
Indonesia's deadly flooding was an "extinction-level disturbance" for the world's rarest great ape, the tapanuli orangutan, causing catastrophic damage to its habitat and survival prospects, scientists warned on Friday.
A 6.7 magnitude earthquake causes small tsunami waves off northeastern Japan
A 6.7 magnitude earthquake shook northeastern Japan and caused small tsunami waves but no apparent damage Friday, days after a stronger quake in the same region.
Conservationists connect with chimps in a Ugandan rainforest as they seek a sense of communion
The man tracking chimpanzee movements in a rainforest is required to follow the primates wherever they go—except up in the trees.
The social media ban is just the start of Australia's forthcoming restrictions—and teens have legitimate concerns
There has been massive global interest in the new social media legislation introduced in Australia aimed at protecting children from the dangers of doom‑scrolling and mental‑health risks potentially posed by these platforms ...
Almost 60% of pupils accidentally stumble on unverified Holocaust content on social media
Experts at UCL have raised concerns about online misinformation after new research found that over half of pupils have unintentionally encountered Holocaust-related content on social media.
The problem with the school smartphone debate
Amid concern about student screen time and mental health, new research indicates that most U.S. public schools already have policies regulating the use of smartphones in class.
When the Atlantic creeps closer: Study helps vulnerable Massachusetts peninsula prepare for rising sea levels
On many days, Apple Street looks like a picture postcard of New England. Oaks shade a time-worn stone wall, boat sheds loll behind granite outcrops. But during storms, this pretty lane only a few feet above sea level can ...
Mission for ancient climate clues beneath Antarctic ice gets underway
If it were to melt completely, the vast West Antarctic Ice Sheet (WAIS) holds enough ice to raise the global sea levels by 4 to 5 meters (13 to 16 feet).
The Ivies can weather the Trump administration's research cuts. Public universities that have the most to lose
Most of the media coverage of the federal government's recent cuts in federal research money for universities has focused on its effects on a handful of elite Ivy League universities, such as Harvard, Columbia and Cornell.
Examining trends and factors of urban shrinkage in medium-sized cities
Cities do not always grow in a straight line. Like living organisms, they experience growth, maturity, and sometimes decline. This decline, known as urban shrinkage, is a natural phase in the urban life cycle. It is common ...
The toy aisle is still full of gender bias. Here's how to navigate it these holidays
Parents the world over have begun the task of negotiating Christmas lists written by their children. But buying the right presents for kids can feel like a minefield, with an ever-growing list of choices and factors to consider. ...
With feathers into the afterlife: New results on the Bad Dürrenberg shaman burial
The approximately 9,000-year-old grave of the shaman from Bad Dürrenberg (Saalekreis district) is one of the most spectacular finds in Central European archaeology. Excavated under considerable time pressure in 1934, subsequent ...
Q&A: Why prosperity in the U.S. and India now rise—or fall—together
As global economic relationships evolve, Achyuta Adhvaryu, professor of economics at the University of California San Diego School of Global Policy and Strategy and director of the 21st Century India Center, says one partnership ...
Nutritional properties of acorns confirmed in study
A study identifies the chemical compounds present in acorns, which could help determine which are best for consumption, thus boosting the consumption of an underutilized and undervalued food.
The surprising theology inside today's Advent calendars
It would be easy to conclude that Advent calendars—usually with 25 compartments that reveal a treat, image or scripture, used to count down the days from Dec. 1 to Christmas Eve—represent just another way Christmas is ...
Polytechnic universities focus on practical, career-oriented skills, offering an alternative to traditional universities
For decades, a four-year college degree was widely seen as the standard path to getting most midlevel jobs in the United States. It was the expected entry point for getting a job as a marketing specialist, project manager, ...
The shape of sand grains reveals the distance traveled by rivers
A team from the Centro Nacional de Investigación sobre la Evolución Humana (CENIEH) has collaborated with researchers from the University of Málaga (UMA) and the University of Córdoba (UCO) on an article published in ...
Plastics dominate UK litter as rural and outdoor spaces emerge as pollution hotspots
A new study by the University of Portsmouth shows that plastic items make up more than seven in ten pieces of litter recorded across the UK, with countryside locations and public recreation areas carrying some of the heaviest ...
