Scientists and educators make the 2025 Doomsday Clock announcement at a press conference in Washington DC on Tuesday, January 28.

The measure of the current proximity to the 'end of the world' will take account of

the proliferation of nuclear weapons, technologies like artificial intelligence, conflicts in Ukraine and the Middle East, bio-threats and climate change.

In January 2023, the Doomsday Clock was set at 90 seconds to midnight, the closest to midnight it has ever been, and it remained the same for 2024.

The Doomsday Clock was created in 1947, when nuclear weapons were thought to be the greatest threat to humanity.