The 'Doomsday Clock' is now 85 seconds to midnight — the closest it's ever been. What scientists say this means for humanity and how the time is determined.

The clock is a symbolic way to show the public how close scientists believe the world is to a human-made apocalypse.

Doomsday Clock moves closer to the end of the world in 2026 update

The experts behind the Doomsday Clock have updated it for another year and revealed the new time it has been set to.