The symbolic Doomsday Clock has been maintained by the Bulletin of the Atomic Scientists since 1947.

Humanity is closer than ever to catastrophe, according to the atomic scientists behind the Doomsday Clock. The ominous metaphor ticked one second closer to midnight this week. The clock now stands ...

The Bulletin of the Atomic Scientists will unveil the 2026 setting of the Doomsday Clock on January 27, with nuclear weapons threats, expiring arms treaties, and growing stockpiles among key factors ...

Clocks on Earth are ticking a bit more regularly thanks to NIST-F4, a new atomic clock at the National Institute of Standards and Technology (NIST) campus in Boulder, Colorado. This month, NIST ...