On August 6, 1945, the sky above the Japanese city of Hiroshima opened. A blinding flash, then a deafening sonic boom. An entire city pulverized in seconds. Thus began the nuclear age. Today, 80 years ...

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.

In the wake of the blast, these eerie shadows were left etched into surfaces across the city—almost like a photo negative of those who were lost. When the atomic bomb detonated over Hiroshima, it left ...