A panel of international scientists has moved their symbolic “Doomsday Clock” closer to midnight than ever before, citing Russian nuclear threats amid its invasion of Ukraine, tensions in other world hot spots, military applications of artificial intelligence and the climate crisis as factors underlying the risks of global catastrophe.

The Bulletin of the Atomic Scientists set the clock to 89 seconds before midnight – the theoretical point of annihilation. That is one second closer than it was set last year. The Chicago-based nonprofit created the clock in 1947 during the cold war tensions that followed the second world war to warn the public about how close humankind was to destroying the world.