Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the ...

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 ...

Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad President ...