The world is 90 seconds away from “midnight,” according to the Doomsday Clock, the closest it has ever been to the symbolic hour of apocalypse.
The time had been set at 100 seconds away from midnight since 2020. The Bulletin of the Atomic Scientists says it has been using the clock for more than seven decades to convey the level of risk from threats, from nuclear weapons to climate change.
This year’s is the first update to the clock since the war in Ukraine revived fears of a nuclear disaster in a year of fires and floods around the world. Here’s what to know about the metaphorical timepiece: