The Bulletin of the Atomic Scientists set the Doomsday Clock to 89 seconds to midnight, one second more than the last two years, attributed to threats posed by climate change and artificial intelligence. The clock is a symbolic indication of humanity’s perceived proximity to human-caused catastrophe. The Bulletin of the Atomic Scientists set the Doomsday Clock to 89 seconds to midnight, one second more than the last two years, attributed to threats posed by climate change and artificial intelligence. The clock is a symbolic indication of humanity’s perceived proximity to human-caused catastrophe. NBC News Science