WIRED ScienceThe Grid Might Survive an Electromagnetic Pulse Just Fine
Over the past few years, speculation has risen around whether North Korea or any other nation could detonate a nuclear weapon over the United States that would create an electromagnetic pulse, and knock out all electricity for weeks or months. This doomsday hypothesis has been promoted by a former CIA director , a commission set up by Congress, and a book by newsman Ted Koppel.
