The Doomsday Clock now stands at 89 seconds to midnight, the closest to catastrophe in its nearly eight-decade history. Here's a look at how — and why — it's moved.

The Doomsday Clock of the Bulletin of the Atomic Scientists, set at 89 seconds to midnight, is displayed during a news conference at the United States Institute of Peace, Tuesday, Jan. 28, 2025 ...

The Doomsday Clock is seen at 89 seconds to midnight, the closest the clock has ever been to midnight in its 78-year history to signal that the world is on a course of unprecedented risk, as set ...