It's been dubbed the "mother of all bombs," or MOAB, and for good reason: It's the largest non-nuclear bomb in the United States' arsenal. Weighing about 22,000 pounds (about five tons heavier than ...

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A new type of fallout forensics can reconstruct nuclear blasts decades after detonation. By measuring the relative abundance of various elements in debris left over from nuclear explosions, ...

Graphics: On the 70th anniversary of the Hiroshima atomic bomb, we look at the impact it would make on cities around the UK London, the English capital, which has seven million inhabitants, would see ...