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Phys.org / Ancient mega-shark ruled Australian seas 15 million years before megalodon

In the age of dinosaurs—before whales, great whites or the bus-sized megalodon—a monstrous shark prowled the waters off what's now northern Australia, among the sea monsters of the Cretaceous period.

Dec 28, 2025 in Biology
Medical Xpress / Why the human brain matures slower than its primate relatives

The human brain is a fascinating and complex organ that supports numerous sophisticated behaviors and abilities that are observed in no other animal species. For centuries, scientists have been trying to understand what is ...

Dec 26, 2025 in Genetics
Phys.org / Severe drought linked to the decline of the hobbits 61,000 years ago

An international team of scientists, including the University of Wollongong (UOW), has found compelling evidence that a changing climate played a role in the extinction of the early human species Homo floresiensis, also known ...

Dec 27, 2025 in Biology
Phys.org / Resurrected tissue: Mechanism that enables regeneration after extensive damage solves a 50-year-old mystery

Like a phoenix rising from the ashes, our skin tissue—and in fact many types of epithelial tissue that lines and covers the body's organs—can respond to death and destruction with a burst of regeneration. This phenomenon, ...

Dec 24, 2025 in Biology
Phys.org / New image sensor breaks optical limits

Imaging technology has transformed how we observe the universe—from mapping distant galaxies with radio telescope arrays to unlocking microscopic details inside living cells. Yet despite decades of innovation, a fundamental ...

Dec 24, 2025 in Physics
Phys.org / Astronomers explore the double nucleus of galaxy NGC 4486B

Using the James Webb Space Telescope (JWST), an international team of astronomers has observed an elliptical galaxy known as NGC 4486B. Results of the observational campaign, published Dec. 16 on the arXiv preprint server, ...

Dec 26, 2025 in Astronomy & Space
Phys.org / Chinchorro mummification may have originated as a form of art therapy, study suggests

In a recent study published in the Cambridge Archaeological Journal, Dr. Bernardo Arriaza argues that the practice of artificial mummification among the Chinchorro people may have evolved as a response to high infant mortality ...

Dec 26, 2025 in Other Sciences
Phys.org / Glowing urine and shining bark: Scientists discover the secret visual language of deer

During mating season, when male white-tailed deer want to get noticed by the opposite sex and warn off rivals, they rub their antlers against trees and scrape the forest floor. Then they pee on these patches. But there is ...

Dec 24, 2025 in Biology
Phys.org / New reactor produces clean energy and carbon nanotubes from natural gas

Scientists from the University of Cambridge have developed a new reactor that converts natural gas (a common energy source primarily composed of methane) into two highly valuable resources: clean hydrogen fuel and carbon ...

Dec 23, 2025 in Physics
Medical Xpress / Alzheimer's disease can be reversed in animal models to achieve full neurological recovery

For over a century, Alzheimer's disease (AD) has been considered irreversible. Consequently, research has focused on disease prevention or slowing, rather than recovery. Despite billions of dollars spent on decades of research, ...

Dec 24, 2025 in Neuroscience
Phys.org / Raindrops form 'sandballs' as they roll downhill, contributing more to erosion than previously thought

What happens as a raindrop impacts bare soil has been fairly well-studied, but what happens to raindrops afterward is poorly understood. We know that the initial splash of raindrops on soil contributes to erosion, but a new ...

Dec 23, 2025 in Physics
Phys.org / The chaotic 'Dracula's Chivito': Hubble reveals largest birthplace of planets ever observed

Astronomers using NASA's Hubble Space Telescope have imaged the largest protoplanetary disk ever observed circling a young star. For the first time in visible light, Hubble has revealed the disk is unexpectedly chaotic and ...

Dec 23, 2025 in Astronomy & Space