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?
I've posted previously about EMP dangers, both man-made (military attack or terrorism) and naturally occurring (solar storms and flares). I think this Explorer episode intends to address both.
Also see: Is this why our ancestors worshiped the sun?