US Air Force is guarding against electromagnetic pulse attacks. Should we worry?
One way to create an EMP is to set off a nuclear bomb. Here, a billowing white mushroom cloud during Operation Ivy, the first test of a hydrogen bomb, at Enewetak Atoll in the Marshall Islands. (Image credit: CORBIS/Corbis via Getty Images) A U.S. Air Force base in Texas has taken the first steps to guard…