Add Yahoo as a preferred source to see more of our stories on Google. Part of Operation Upshot-Knothole, was a 15-kiloton test fired from a 280-mm cannon on May 25, 1953 at the Nevada Proving Grounds.

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The H-bomb explosions in mid-Pacific last year were awesome proof of how big the atom can blow. The 14 test shots at Yucca Flat, Nev., programmed between Feb. 1 and this week, are equally sensational ...

Thirteen months after initiating a massive invasion that has resulted in the deaths of tens of thousands of Russians and Ukrainians, Russian president Vladimir Putin is worried that a modest number of ...

How big is an atomic bomb? It took a B-29 to carry the first one, dropped on Hiroshima, which may have weighed more than 10,000 Ibs. The Army’s announcement last week that it will abandon its ...