The 'Doomsday Clock' has moved back to its most alarming position in the symbol's 71-year history

NOAA The Doomsday Clock, started during the Cold War, symbolizes the threat to global civilization posed by humans. A panel of experts on Thursday changed the clock to two minutes to midnight, a forward movement of 30 seconds. The time is "is as close as it has ever been to midnight in the 71-year history of the clock." Several factors contributed to the clock's advancement, including President Donald Trump's rhetoric on nuclear weapons and his administration's policy positions. A group of emine...