The symbolic Doomsday Clock, a global warning signal watched around the world, has moved closer to midnight than ever before. For 2026, scientists have set the clock at 85 seconds to midnight, marking the most serious warning since the clock was first created in 1947.

Earth is closer than it’s ever been to destruction as Russia, China, the U.S. and other countries become “increasingly aggressive, adversarial, and nationalistic,” a science-oriented advocacy group sa...

On Tuesday, scientists set a new time, arguing that countries are failing to heed their dire warnings.