Could an electromagnetic pulse send us back to the Dark Ages?

The electromagnetic pulse. It's the big, bad boogeyman of the electronic age where we depend on a constant stream of communication and connection. Everything stops – instantly. EMPs are often used in pop culture (particularly any time Magneto wants to take over the planet) to caused widespread destruction and to… » 10/07/11 8:00am 10/07/11 8:00am