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Phys.org / Veritas explores the nature of a mysterious gamma-ray emitter

Astronomers have employed the Very Energetic Radiation Imaging Telescope Array System (VERITAS) to observe a mysterious gamma-ray emitting source designated HESS J1857+026. Results of the observational campaign, published ...

Dec 29, 2025 in Astronomy & Space
Medical Xpress / Too much screen time too soon? Study links infant screen exposure to brain changes and teen anxiety

Children exposed to high levels of screen time before age 2 showed changes in brain development that were linked to slower decision-making and increased anxiety by their teenage years, according to new research by Asst. Prof. ...

Dec 30, 2025 in Neuroscience
Phys.org / Simple wipe test reveals hidden PFAS contamination on firefighter protective gear

The flames die down. The sirens fade. Firefighters peel off their gear, thinking the danger has passed. But in the quiet aftermath, another enemy lingers, an invisible film of "forever chemicals" clinging to jackets, pants ...

Dec 30, 2025 in Chemistry
Tech Xplore / Passengers' brain signals may help self-driving cars make safer choices

Cars from companies like Tesla already promise hands-free driving, but recent crashes show that today's self-driving systems can still struggle in risky, fast-changing situations.

Dec 30, 2025 in Automotive
Medical Xpress / Loss of vitamin C synthesis protects animals from deadly schistosome infection

Scientists at Children's Medical Center Research Institute at UT Southwestern (CRI) have discovered a benefit of vitamin C deficiency: protection from a major parasitic disease. Their research suggests an explanation for ...

Dec 30, 2025 in Immunology
Phys.org / Fungus disarms bark beetle chemical shields by converting their plant-derived toxins

Spruce bark is rich in phenolic compounds that protect trees from pathogenic fungi. A research team at the Max Planck Institute for Chemical Ecology in Jena has investigated how these plant defenses function within the food ...

Dec 29, 2025 in Biology
Phys.org / Encoding adaptive intelligence in molecular matter by design

For more than 50 years, scientists have sought alternatives to silicon for building molecular electronics. The vision was elegant; the reality proved far more complex. Within a device, molecules behave not as orderly textbook ...

Dec 30, 2025 in Nanotechnology
Medical Xpress / A protein that makes hydrogen sulfide shows potential as a therapeutic target for Alzheimer's disease

Scientists at Johns Hopkins Medicine say results of a new study are advancing efforts to exploit a new target for Alzheimer's disease: a protein that manufactures an important gas in the brain.

Phys.org / Ancient bone arrow points reveal organized craft production in prehistoric Argentina

For decades, research and understanding of the diverse bone raw material used by the Late Prehispanic Period (~1220 to 330 cal BP) people of the Sierras de Córdoba were scarce. However, Dr. Matías Medina and his colleagues, ...

Dec 28, 2025 in Other Sciences
Phys.org / New dataset maps global city boundaries in high resolution from 2000 to 2022

A research team led by Prof. Liu Liangyun from the Aerospace Information Research Institute of the Chinese Academy of Sciences (AIRCAS) has produced the first comprehensive, high-resolution map of global city and town boundaries, ...

Dec 30, 2025 in Earth
Medical Xpress / Brain immune cells may drive more damage in females than males with Alzheimer's

More than 7 million Americans have Alzheimer's disease, and two-thirds of them are women, according to the Alzheimer's Association. The O'Banion Lab at the Del Monte Institute for Neuroscience at the University of Rochester ...

Phys.org / Men embodying women in VR report strong emotional reactions to verbal harassment

Unfortunately, many women and girls know all too well what it means to be victims of verbal harassment. They are familiar with its emotional and psychological impact. What about men? What would they feel if they were in the ...

Dec 29, 2025 in Other Sciences