which was the type dropped on Hiroshima, Japan, during World War II, killing 70,000. Here’s a look at how a so-called H-bomb works.

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 ...

Initial Soviet research into the H-bomb followed closely the path the U.S. scientists were pursuing. The work was conducted by a group in Leningrad led by Iakov Zel'dovich that had been given ...

"I have directed the Atomic Energy Commission," he said, "to continue its work on all forms of atomic weapons, including the so-called hydrogen or superbomb." To supporters of the H-bomb ...

The H-bomb could be at least 1,000 times as powerful ... A group of top scientists went to work on a new analysis. Their report: granted a huge concentration of effort, a guarantee of ironclad ...

Storm Éowyn is about to hit the U.K. and Ireland as forecasters warn the explosive "bomb cyclone" will bring snow, rain and ...