Back during the Reagan administration of the 1980's, a significant amount of press was invested in articles discussing the real possibility of a nuclear war with the Soviet Union.  In 1984, when arms talks failed, the Doomsday Clock was moved to 3 minutes to midnight.  At the time, as a teenager, it was deeply troubling to hear people talk seriously of the costs and practicalities of building their own nuclear fallout shelters.  Then I learned that even if one survived the 'nuclear holocaust' as it was called, the nuclear winter that would follow it could go on for years. 

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