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 ...

Add Yahoo as a preferred source to see more of our stories on Google. In May 1945, near the end of World War II, Germany surrendered to the Allies but Japan refused. To end the war quickly, President ...