During the Cold War, the world prepared for nuclear war. In 1954, the United States detonated a 15-megaton nuclear bomb at Bikini Atoll — 1,000 times more powerful than Hiroshima. Entire islands were ...

Next month it will have been 80 years since the Japanese cities of Hiroshima and Nagasaki were devastated by nuclear attacks. More than 200,000 people – mostly citizens – would die by the year's end ...

While some states may not be in the crosshairs, no state would be completely immune to the effects of a nuclear blast, with radiation in the atmosphere.