Answers to common questions
The Bulletin has reset the minute hand on the Doomsday Clock 25 times since its debut in 1947, most recently in 2023 when we moved it from 100 seconds to midnight to 90 seconds to midnight. Every time it is reset, we’re flooded with questions about the internationally recognized symbol. Here are answers to some of the most frequent queries.
The Doomsday Clock is a design that warns the public about how close we are to destroying our world with dangerous technologies of our own making. It is a metaphor, a reminder of the perils we must address if we are to survive on the planet.
When the Doomsday Clock was created in 1947, the greatest danger to humanity came from nuclear weapons, in particular from the prospect that the United States and the Soviet Union were headed for a nuclear arms race. The Bulletin considered possible catastrophic disruptions from climate change in its hand-setting deliberations for the first time in 2007.
Learn about the history of the Doomsday Clock
In this four minute video, Bulletin multimedia editor Erik English explores the history of the Clock and how it has evolved over the past 75+ years it's been around.