Scientists move Doomsday Clock to 85 seconds before midnight
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The "Doomsday Clock" is a metaphor for how close humanity is to self-annihilation.
Signs of impending doom are all around, especially as a potential time change for the "Doomsday Clock" looming. See other signs of impending doom.
USA TODAY asked Alexandra Bell, the president and CEO of the Bulletin of the Atomic Scientists, a few questions about the Doomsday Clock.