An curved arrow pointing right. North Korea recently claimed to test a hydrogen bomb. Some experts say it is more likely they tested a "boosted" atomic bomb. Although this type of bomb isn't ...

Also called a fusion bomb, hydrogen bomb or H-bomb, a thermonuclear weapon is a second-generation nuclear weapon design that is vastly superior to the first-generation atomic bombs. In fact ...

Meanwhile, physicist Edward Teller and Atomic Energy Commissioner (AEE) Lewis Strauss were among those who began arguing vociferously for a "high-priority" program to build a hydrogen bomb.

A hydrogen bomb—the type North Korea claims it tested—is many magnitudes more powerful than an atomic bomb, which was the type dropped on Hiroshima, Japan, during World War II, killing 70,000.