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National Geographic Explorer Electronic Armageddon

What do future presidents need to know about existential dangers this country could face? Explorer investigates the science behind the dangers of a high-altitude electromagnetic pulse, or HEMP. Picture an instantaneous deathblow to the vital engines that power our society, delivered by a nuclear weapon designed not to kill humans but to attack electronics. What could happen if an electromagnetic pulse surged to earth, crippling every aspect of modern society"s infrastructure?