Watch how the first atomic bomb test unfolded, as scientists pushed the limits of physics in a race to end the war. Behind ...

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 ...

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 ...