Add Yahoo as a preferred source to see more of our stories on Google. The 2026 Doomsday Clock is ticking closer to midnight, signaling humanity edging to the "closest it has ever been to catastrophe" ...

Twice a year, Americans reset their clocks and lose an hour of sleep. The tradition may feel like a modern nuisance, but it began as a wartime policy during World War I. At 2 a.m. local time Sunday, ...

(CNN) — At the dawn of the nuclear age, scientists created the Doomsday Clock as a symbolic representation of how close humanity is to destroying the world. On Tuesday, nearly eight decades later, the ...