Bulletin of the Atomic Scientists: Doomsday Clock
"The Bulletin of the Atomic Scientists informs the public about threats to the survival and development of humanity from nuclear weapons, climate change, and emerging technologies in the life sciences. Through an award-winning magazine, [their] online presence, and the Doomsday Clock, [they] reach policy leaders and audiences around the world with information and analysis about efforts to address the dangers and prevent catastrophe." More of a historical timeline, the hands of the clock have moved forward and back, reflecting the state of international security or nuclear danger. The Bulletin of the Atomic Scientists is archived through Google Books dating back to 1945.
Instruction: Teaching Tools
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