The "Doomsday Clock" is a metaphor for how close humanity is to self-annihilation.

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,” The Bulletin of The Atomic Scientist...

This year, the group highlighted the growing threat of nuclear weapons, disruptive technologies such as artificial intelligence, multiple concerns about biosecurity, and the persistent climate crisis ...