The BulletinBy moving the hand of the Clock closer to midnight — the figurative end of civilization — the BAS Board of Directors is drawing attention to the increasing dangers from the spread of nuclear weapons in a world of violent conflict, and to the catastrophic harm from climate change that is unfolding.

“The dangers posed by climate change are nearly as dire as those posed by nuclear weapons. The effects may be less dramatic in the short term than the destruction that could be wrought by nuclear explosions, but over the next three to four decades climate change could cause irremediable harm to the habitats upon which human societies depend for survival.”

The Bulletin of the Atomic Scientists was founded in 1945 by University of Chicago scientists who had worked on the Manhattan Project and were deeply concerned about the use of nuclear weapons and nuclear war. The Doomsday Clock evoked both the imagery of apocalypse (midnight) and the contemporary idiom of nuclear explosion (countdown to zero).

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