The deadliest weapon of all time was the 25-megaton hydrogen bomb. Its lethality index score is an astonishing 210,000,000,000. Created in the manic arms race of the Cold War, the B-41 hydrogen ...

The First Hydrogen Bomb Sixty-five years ago, a test of a fearsome new weapon. Tony Reichhardt . November 2, 2017. Get our newsletter! Get our newsletter! The Ivy Mike test, November 1, 1952.

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.

Richard Garwin drew up the plans for the hydrogen bomb and spent seven decades advising presidents on scientific matters . ... Instead, he took a job at IBM, where he stayed for 41 years, ...