Add Yahoo as a preferred source to see more of our stories on Google. The "Doomsday Clock," a metaphor for how close humanity is to self-annihilation, was moved to 85 seconds to midnight on Tuesday, ...

(AP) - 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 ...