The Doomsday Clock is pretty much what it sounds like -- a clock assessing the world's dangers, and how close we are to self-destruction. What is the Doomsday Clock set at now? What's the closest the Doomsday Clock has been to doomsday? What's the farthest the Doomsday Clock has been from doomsday? The Doomsday Clock at 75 delves into the clock's history and how it has impacted culture and policy.
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