2+ hour, 9+ min ago  (885+ words) A new study has found that interstellar comet 3 I/ATLAS, a rare icy object that came from outside our Solar System, carried far less carbon dioxide relative to water after passing the Sun. Earlier observations had suggested a much higher…...

3+ hour, 46+ min ago  (824+ words) Uranus's faint outer ring is made of water-ice grains shed by a 7. 5-mile-wide moon, while the ring beside it comes from rockier debris. That split gives Uranus two neighboring rings with sharply different origins. This confirms evidence of active change…...

10+ hour, 22+ min ago  (733+ words) Harmful sugar made by gut bacteria can trigger immune damage connected to two devastating brain diseases. This data points to the gut as an active driver of disease, not just a bystander far from the brain. In patient samples, this…...

1+ week, 4+ day ago  (875+ words) You may feel relief after sharing strong feelings online about a political issue. Many people post emotional messages hoping to change minds or inspire action. But research from Cornell University and Cambridge University Press shows something surprising. Emotional posts may…...

12+ hour, 26+ min ago  (795+ words) New research shows that trimming specific synapses in a mouse brain circuit can strengthen memories and help them last longer. The finding upends the simple idea that more neural connections always produce better recall, showing instead that selective loss can…...

3+ day, 8+ hour ago  (860+ words) Researchers have documented six meteorite flashes striking the Moon's dark face during a crewed flyby, with astronaut Victor Glover observing from NASA's Orion spacecraft. That finding turns a dramatic pass around the Moon into fresh evidence that even brief visits…...

3+ hour, 53+ min ago  (816+ words) A new review has found that drugs designed to clear amyloid, a protein that builds up in the brains of people with Alzheimer's, offer little or no noticeable benefit after 18 months. That result cuts against years of hope around these…...

4+ hour, 59+ min ago  (770+ words) Faster rock weathering on land helped drive Earth's plunge into a deep ice age about 350 million years ago, according to new research. The study turns a long-running climate mystery into a more direct story of carbon loss, ocean change, and…...

4+ hour, 28+ min ago  (880+ words) A mosquito repellent designed to make warm evenings more pleasant may be causing an invisible problem for bumblebees." A new study suggests that even short exposure to a common insecticide can make it much harder for them to find their…...

3+ hour, 57+ min ago  (1025+ words) Africa's elephants were shaped by movement. For thousands of years, they crossed huge stretches of the continent, mixed with distant herds, and kept their populations genetically strong." A major new study shows that this old freedom is fading, and in…...