Scientists discover atoms suddenly spinning backward in quantum experiment

Scientists have uncovered the oldest known hand-held wooden tools ever used by humans — and they’re an astonishing 430,000 years old. Buried for hundreds of thousands of years at an ancient lakeside site in Greece, the carefully carved wooden objects reveal that early humans were far more skilled and resourceful than once believed.

At the center of most large galaxies sits a supermassive black hole (SMBH). When these black holes are actively consuming material, they become incredibly luminous quasars. But some quasars appear wrapped in thick clouds of dust, making them hard to detect. In a new study, astronomers have revealed 77 new, hidden, "heavily reddened" quasars (HRQs).

By analyzing over 400,000 Reddit posts, researchers discovered that users of popular GLP-1 weight-loss drugs frequently discussed unexpected symptoms like menstrual irregularities, chills, and hot flashes. The findings suggest AI could turn social media into a powerful early-warning system for spotting side effects that clinical trials may miss.

A mysterious particle from deep space has scientists buzzing after the most energetic neutrino ever detected slammed through the Mediterranean Sea. Now, researchers think they may have identified the cosmic “culprits” behind it: blazars — supermassive black holes blasting jets of matter straight toward Earth.