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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 / Recommendations on addressing intimate partner violence issued by expert panel
When Congress passed the Deborah Sampson Act of 2020—named for a woman who served in the Revolutionary War disguised as a man—the goal was to broaden access to government-provided medical care for female military veterans.
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 ...
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 / Membrane nanostructures reshape in water, revealing route to better ion transport
Next-generation energy devices like fuel cells and water electrolyzers depend on ion-exchange membranes that allow only water and certain ions to pass through.
Phys.org / Molecular switch that activates cell growth signaling may offer more precise route for anticancer therapy
Cells carry their own growth switches. When enough nutrients—amino acids in particular—are available, cells flip this switch on and begin to grow. Researchers at KAIST and Yonsei University have uncovered the molecular mechanism ...
Medical Xpress / Experimental plague vaccine strategy protects mice with missing key immune defenses
The plague has killed more people than World War II. The bacterium Yersinia pestis (Yp), which causes plague, has triggered three major pandemics throughout history, leaving behind a casualty toll of more than 200 million ...
Phys.org / Sharks, spines and speed: The hidden architecture behind different swimming styles revealed
"Shark Week," which kicks off this week, has captivated audiences for decades with stories of these powerful ocean predators. But the secret behind their extraordinary swimming abilities lies far deeper than their impressive ...
Phys.org / AI tools for predicting protein folding produce chemically impossible structures and need human oversight
Researchers at Rensselaer Polytechnic Institute (RPI) have found that today's leading artificial intelligence tools for predicting protein structures routinely generate results that are physically and chemically impossible, ...
Phys.org / California wildfire damage risk map uses factors most closely linked to severe property losses
By analyzing 100,000 California Department of Forestry and Fire Protection inspection records from 2013 to 2024, researchers at the University of California, Irvine have identified the key environmental and human factors ...
Tech Xplore / Are gas turbines ready for the hydrogen economy?
Can we fuel gas turbines with hydrogen instead of fossil fuels and cut 15% of global carbon dioxide (CO2) emissions? Gas turbines generate around 22% of the world's electricity. Replacing fossil fuels is a key step toward ...
