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nr myers doomsday clock_00001521
nr myers doomsday clock_00001521

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    Symbolic 'Doomsday Clock' ticks forward

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Symbolic 'Doomsday Clock' ticks forward

The end-of-the-world "Doomsday Clock" is "five minutes away." CNN's Chad Myers explains.

Symbolic 'Doomsday Clock' ticks forward

The end-of-the-world "Doomsday Clock" is "five minutes away." CNN's Chad Myers explains.