Before satellites and global positioning systems, ancient civilizations charted their known universe with remarkable ...

Humanity is closer than ever to catastrophe, according to the atomic scientists behind the Doomsday Clock ... eight-decade history. "The 2025 Clock time signals that the world is on a course ...

“That decision is not good news, but an expression of dismay that world leaders continue ... Several years later the clock reached its safest point in history, 17 minutes to midnight, after ...