from Newsmax by Newt Gingrich and William Forstchen
An electromagnetic pulse (EMP) is a byproduct of detonating an atomic bomb above the Earth’s atmosphere. When a nuclear weapon is detonated in space, the gamma rays emitted trigger a massive electrical disturbance in the upper atmosphere. Moving at the speed of light, this overload will short out all electrical equipment, power grids and delicate electronics on the Earth’s surface. In fact, it would take only one to three weapons exploding above the continental United States to wipe out our entire grid and transportation network. It might take years to recover from, if ever.