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Phys.org / Portugal's ancient giant bears shrank over thousands of years and humans may be to blame
About 22,000 years ago, a giant brown bear lumbered across what is now Portugal. The creature weighed around 385 kg (about 850 pounds), making it one of the largest of its kind ever found, towering over the Iberian brown ...
Medical Xpress / Newly identified molecule could help regulate sleep
Sleep is known to be essential for survival, as it allows both humans and other animals to rest, while the brain consolidates memories and clears out metabolic waste products. For many people worldwide, however, falling asleep ...
Phys.org / Rethinking how we protect the world's mountain communities
As melting glaciers and shifting climates push mountain ecosystems to the brink, an international team of researchers has outlined a radical new approach aimed at strengthening the resilience, inclusivity and sustainability ...
Phys.org / Engineered enzyme erases a stubborn mark of aging by up to 70% in human tissue samples
A biotech company called Revel Pharmaceuticals is looking into ways to reverse aging, and the company's science team, along with researchers from the company Calico and the University of Colorado, may be a step closer to ...
Medical Xpress / Is your diet driving up your cholesterol? That may depend on your genes
Can a low-carb diet cause your cholesterol to skyrocket? This question has vexed researchers and influencers alike as the popularity of low-carbohydrate diets has surged, yet the evidence has remained mixed. New research ...
Phys.org / Modern forensics uncovers new clues about Inca sacrifice victims' last days
Human sacrifice was deeply ingrained in Inca civilization. Children and young people were selected for sacrifice to appease the gods and sacred mountain spirits. Being chosen was considered a great honor for both the victims ...
Phys.org / Soil carbon effectively measured by new, efficient AI model
A new computer model is one of the first artificial intelligence tools to advance scientific discovery in agriculture and biogeochemistry and is 50 times more efficient than its predecessors, according to a study that offers ...
Phys.org / Bird‑safe glass must become the norm to prevent collisions with buildings
Birds are facing a crisis—nearly 3 billion birds have been lost across North America since 1970 as a result of human activities affecting birds and their habitats.
Medical Xpress / What vegan and vegetarian diets can and can't tell us about eating disorders
The simple sentence: "No thanks, I don't eat meat" can prompt very different reactions, but the question that often follows is: "Why?"
Phys.org / French firefighters face 'pyrocumulonimbus' for first time
The gigantic wildfire ravaging southwestern France has created an extremely dangerous "pyrocumulonimbus"—a phenomenon never before seen in the country—the spokesman for the country's National Firefighters Federation of France ...
Phys.org / Microscopic atlas reveals how citrus Huanglongbing disease progresses through trees
What happens inside a citrus tree long before leaves turn yellow, roots decline, and fruit quality suffers? Researchers from the University of Florida Citrus Research and Education Center—Diann S. Achor, Camila Ribeiro, Jinyun ...
Phys.org / Accepting free will doesn't exist could make us less hateful and ashamed
In his 2023 bestseller, Determined, neuroscientist Robert Sapolsky argued that the interaction of biology and environment leaves no room for free choice. Philosopher and neuroscientist Sam Harris puts the case more bluntly: ...
