If a giant solar flare hit the Earth, it could knock out the entire power grid, meaning no more new Taylor Swift singles, no more televised presidential debates, and no more Facebook photos of babies. But it wouldn't be all good news. The Washington Postreports the elecromagnetic pulse—or EMP—created by such an event could wipe out electricity for months on end, creating a global catastrophe. That's why the White House released its National Space Weather Strategy on Thursday. According to the Houston Chronicle, the multiagency plan details how the US will prepare for—and deal with—a massive EMP from space. The six-step plan requires government...