North Korea says it successfully detonated a hydrogen bomb in its latest nuclear test Sunday. But what is a hydrogen bomb? Here's a brief explanation.

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.

More from TIME But a hydrogen bomb has the potential to be 1,000 times more powerful than an atomic bomb, according to several nuclear experts.

How are a hydrogen bomb and a regular atomic bomb different? And why would that matter to the United States and its allies? Here’s what the experts say.

Trump says 'we'll see' about attacking North Korea after announcement of hydrogen bomb test North Korea announced a successful test of a hydrogen bomb on state TV Sunday.

VIENNA – Iranian scientists have run computer simulations for a nuclear weapon that would produce more than triple the explosive force of the World War II bomb that destroyed Hiroshima ...

North Korea has developed a hydrogen bomb which can be loaded into the country's new intercontinental ballistic missile, the official Korean Central News Agency claimed Sunday. Questions remain ...

SEOUL, South Korea (AP) — North Korean leader Kim Jong Un inspected a new, “super explosive” hydrogen bomb meant to be loaded into an intercontinental ballistic missile, Pyongyang’s state ...

North Korea says it successfully detonated a hydrogen bomb in its latest nuclear test Sunday. But what is a hydrogen bomb? Here's a brief explanation.