The Doomsday Clock is a symbolic clock face that represents the likelihood of a global catastrophe. The closer the clock is to midnight, the closer the world is to global disaster. In January 2020, the clock was set to 100 seconds to midnight, the closest it has ever been since its inception in 1947. The clock is maintained by the Bulletin of the Atomic Scientists.
As of January 2021, the Doomsday Clock has been moved back to 100 seconds to midnight, as the global threat of nuclear war and climate change remain as serious as ever. As of 2023, the Doomsday Clock is expected to remain at 100 seconds to midnight, indicating that humanity is still at risk of extinction.