However, there is a key difference between atomic weapons and thermonuclear weapons, such as the H-Bomb, because the latter uses nuclear fusion in addition to fission reactions.

North Korea says it may test a hydrogen bomb over the Pacific Ocean, after claiming a successful underground test in early September. CNN values your feedback 1.

A hydrogen bomb has never been used in battle by any country, but experts say it has the power to wipe out entire cities and kill significantly more people than the already powerful atomic bomb ...

A hydrogen bomb, also known as a thermonuclear bomb, can create explosive force hundreds or even thousands of times greater than an atomic bomb. Here's how the H-bomb contains such massive power.

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.

In 1952, the United States detonated its first full-scale H-Bomb, a Teller-Ulam thermonuclear device code-named Ivy Mike, on Enewetak Atoll. Photograph courtesy Los Alamos National Laboratory ...

But nuclear experts saw plenty of reason to doubt the country’s assertion that it had successfully detonated a hydrogen bomb — just before leader Kim Jong Un’s 33rd birthday.

The mayor of Greater Manchester calls on the government to act while the remaining survivors of the UK's 1950s nuclear tests ...

Richard Garwin’s role in designing the hydrogen bomb was obscured from the public, even his family, as he advised presidents and devoted his life to undoing the danger he created. Richard L ...

Hydrogen bombs are so destructive, their impact has been described as unthinkable throughout history. Recently declassified Russian footage of the 1961 Tsar Bomba hydrogen bomb test shows why. The ...