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 ...

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The 1945 Trinity test produced heat 10,000 times greater than the surface of the sun and spread fallout across the country. Tina Cordova and her mother, Rosalie, relax at Bonito Lake, New Mexico, in ...