The idea began to warn humanity behind the dangers of nuclear war with midnight marking the theoretical point of annihilation.
Scientists hope it will alert the public and pressure leaders to make the world a safer place. In 2023, the Bulletin of the Atomic Scientists, based in Chicago, Illinois, set the hands at 90 seconds to midnight, largely because of the war in Ukraine. Now it will meet to decide where to set the hands of the clock for 2024.