Humanity is closer to species-threatening disaster than ever before, according to the Bulletin of the Atomic Scientists, who today moved the hand of the "Doomsday Clock" to 89 seconds to midnight. That's the closest the clock has ever been to catastrophe.

Nuclear, disease and AI fears factor into 2025 Doomsday Clock reset The nuclear threat is especially concerning this year, said Manpreet Sethi, a member of the board and distinguished fellow at the Centre for Air Power Studies in New Delhi.

The Bulletin of Atomic Scientists announced Tuesday that the "Doomsday Clock" is now set to 89 seconds to midnight.