The number of survivors of the U.S. atomic attacks on Hiroshima and Nagasaki is dwindling 80 years later, but they are increasingly speaking out against nuclear weapons

The 80th anniversary of the atomic bombing of Hiroshima and Nagasaki is this week. It was the only time nuclear warheads were used during war. Here’s a look at the history and current U.S. stockpile. More deadly: Today’s nuclear weapons can be far more devastating than the horror that happened at Hiroshima on Aug. 6, 1945.