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History
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Cover of the 1947 Bulletin of the Atomic Scientists issue, featuring the Doomsday Clock at "seven minutes to midnight"
Cover of the 1947 Bulletin of the Atomic Scientists issue, featuring the Doomsday Clock at "seven minutes to midnight"
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Artist's impression of a major asteroid impact. An asteroid caused the extinction of the non-avian dinosaurs.
Artist's impression of a major asteroid impact. An asteroid caused the extinction of the non-avian dinosaurs.