The Doomsday clock was set at 89 seconds to midnight on Tuesday morning, putting it the closest the world has ever been to what scientists deem "global catastrophe." The decades-old international ...

The Doomsday Clock is seen at 89 seconds to midnight, the closest the clock has ever been to midnight in its 78-year history. SAUL LOEB/AFP via Getty Images ...

Scientists and global leaders revealed on Tuesday that the "Doomsday Clock" has been reset to the closest humanity has ever come to self-annihilation. For the first time in three years, the ...

The clock, which was first set at 7 minutes to midnight in 1947, is not intended to be a prediction of when the world will end, but is instead a metaphor to spark conversation and action about ...

The Doomsday Clock, which has been used to examine the world’s vulnerability to global catastrophe for nearly a century, has moved one second closer to midnight. On Jan. 28, the Bulletin of the ...

NEW YORK, NY - SEPT 24: The “Climate Clock” in Union Square counts down the years, days, hours, minutes, and seconds the Earth has left to take action to stop global warming. (Photo by Alexi ...

The Doomsday Clock is seen at 89 seconds to midnight, the closest the clock has ever been to midnight in its 78-year history. / Credit: SAUL LOEB/AFP via Getty Images ...