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6th November 1952:  Characteristic mushroom shaped cloud begins formation after the first H-Bomb explosion (US) at Eniwetok Atoll in the Pacific.  (Photo by Three Lions/Getty Images)
6th November 1952:  Characteristic mushroom shaped cloud begins formation after the first H-Bomb explosion (US) at Eniwetok Atoll in the Pacific.  (Photo by Three Lions/Getty Images)

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    What is an H-bomb?

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What is an H-bomb?

CNN's Kristie Lu Stout explains why a hydrogen bomb is more powerful than an atomic bomb.

What is an H-bomb?

CNN's Kristie Lu Stout explains why a hydrogen bomb is more powerful than an atomic bomb.