ScienceDaily

Scientists have uncovered fossils of a giant rodent that lived in Thailand 34 million years ago, revealing that enormous rodents evolved much earlier than previously thought. Named Yakamys sirindhornae, the ancient animal may have weighed around 66 pounds, roughly twice as much as other known rodents of its time.

Even when bad cholesterol is brought down to healthy levels, some people remain at risk of heart attacks, and scientists may have discovered why. Researchers identified two types of fat-carrying particles that appear to promote inflammation and damage blood vessels through mechanisms beyond cholesterol buildup.

A bizarre, heavily armored amphibian roamed the oceans 237 million years ago, despite the fact that modern amphibians cannot survive entirely in saltwater. Discovered in China, the giant salamander-sized creature may be the first known amphibian to have adapted to a fully marine existence.

After more than a year of simulated life on Mars, four NASA volunteers have finally emerged from isolation, bringing a remarkable space exploration experiment to an end. Their experiences growing food, conserving resources, and overcoming Mars-like challenges could help NASA prepare for humanity's future on the Moon and Mars.

NASA is putting $500,000 on the line in a new competition to accelerate the development of advanced electric rocket engines for satellites and future space exploration. The AMPERE Challenge will reward up to two U.S. companies with cash prizes and access to NASA testing facilities to help bring promising propulsion technology closer to real-world missions.

Global fossil fuel emissions are projected to fall in 2026 as renewable energy and electric vehicles gain ground, but rising emissions from deforestation threaten to push total CO2 emissions to a new record. Scientists warn that the world's remaining carbon budget for limiting warming to 1.5°C could be exhausted in less than four years, even as a lasting decline in emissions appears increasingly …

A breakthrough in telescope imaging could reveal countless alien worlds that have been hiding in plain sight. Scientists developed a new technique that uses a digital twin of the James Webb Space Telescope to remove the overwhelming glare of stars, making faint exoplanets two to 15 times easier to detect than with conventional methods. The technology has already uncovered a previously hidden plan…

A major review of more than 350 studies suggests that eating less protein could slow aging, improve metabolic health, and potentially extend lifespan, challenging the widespread belief that more protein is always better. Researchers warn that many sedentary adults may be consuming too much protein, while emphasizing that individual needs depend on age and physical activity.

A surprising new study reveals that mosquitoes have very different tastes in humans, with each species attracted to its own combination of skin odors, chemicals, and bacteria. The discovery challenges the idea of a universal mosquito magnet and could lead to more effective repellents against dangerous disease-spreading mosquitoes.

NASA's Hubble Space Telescope has revealed surprising new details about a mysterious, 93-billion-mile-long cloud of dark, fluffy dust that may have formed when massive planetary bodies collided. The discovery challenges previous assumptions about the structure and offers new clues about the violent birth of planetary systems.

A century-old theory about the origins of life on Earth may be wrong. New research from the University of Cambridge suggests that comets traveled too fast and struck at unfavorable angles for the fragile molecules needed for life to survive, making successful delivery extraordinarily unlikely. Surprisingly, Mars may have had a better chance of receiving these cosmic ingredients, although even the…

Scientists have discovered a remarkably preserved 450-million-year-old fossil containing soft tissues from an ancient starfish relative, revealing unexpected details about marine life more than 200 million years before dinosaurs existed. Found in a museum collection, the extraordinarily rare specimen offers new clues about how Earth's earliest reef animals fed, survived, and evolved.

Scientists have discovered that tumors release natural antioxidants to shut down the immune cells responsible for destroying cancer, exploiting a surprising weakness in the body's defenses. Blocking this mechanism in mice restored immune activity and improved immunotherapy responses, potentially opening a new path toward more effective cancer treatments.

A surprising discovery suggests that some early signs of Alzheimer’s disease may begin outside the brain. Using miniature laboratory systems made from human cells, scientists found that genetic mutations associated with inherited Alzheimer’s can disrupt nerve-to-muscle connections without any involvement from the brain or spinal cord. This could help explain why some patients experience changes i…

Scientists have uncovered a hidden gut-to-brain dopamine pathway that helps explain why bitter coffee and other initially unpleasant flavors can become favorites over time. The discovery reveals how the brain learns to crave certain foods and could eventually lead to new ways of reshaping eating habits and food preferences.