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Code-named "Bravo," America's first hydrogen bomb is tested on Bikini Atoll in the Marshall Islands. It was the most powerful nuclear explosion ever detonated by the U.S., a thousand trimes more powerful than the bomb that was dropped on Hiroshima in 1945. (March 1, 1954) (Credit: U.S. Department of Defense Photo)

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Fallout: The legacy of BNL's mission in the Marshall Islands

Fallout: The legacy of Brookhaven National Lab's mission in the Marshall Islands

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