For decades, the U.S. has led the race to clean, limitless nuclear fusion energy. Now China is catching up, spending twice as ...

However, while fusion is relatively easy to achieve in the heart of the sun or in a hydrogen bomb, creating a practical reactor that produces more energy than is put into it is another matter ...

and a fusion tamper, uranium. Results of the explosion seemed to indicate the device as more similar to a powerful fission bomb than an actual hydrogen bomb. The test’s explosion yielded the ...

Debonair Harold Macmillan, the Tory Defense Minister (and wartime political adviser to General Eisenhower in North Africa), pridefully pointed out that Britain had figured out the H-bomb ...