A congressman noted that one scientist's disappearance was a national security issue, claiming that he possessed some nuclear ...

Almost all living things have an internal 24-hour clock that remains accurate regardless of temperature or other ...

Try our new quiz, it comes in a new format and now has three parts - easy, tricky and tough - with 20 multiple-choice questions in each. Start things off with these 20 "easy" questions. After ...

Mar. 24, 2026 Astronomers have finally cracked a decades-old mystery about red giant stars—how material from their deep interiors makes its way to the surface. Using cutting-edge supercomputer ...

Current evidence points to modest effects of artificial-intelligence tools on jobs, highlighting how bad data, not sweeping automation, is driving much of today’s alarm.