The Doomsday Clock set at 100 seconds to midnight by The Bulletin of Atomic Scientists is displayed at the National Press Club in Washington on January 23, 2020. AFP
The Doomsday Clock set at 100 seconds to midnight by The Bulletin of Atomic Scientists is displayed at the National Press Club in Washington on January 23, 2020. AFP

Nuclear and climate threats push Doomsday Clock closer to midnight