These weren't concepts that lived only on paper. Every weapon on this list reached at least the prototype or testing stage.

The National Museum of Nuclear Science & History has opened “American Nukes,” a new exhibit featuring photos by Darin Boville. “‘American Nukes’ is a survey of nuclear weapons on display in the United ...

Space is supposed to be free of nuclear weapons, but there’s no way to check. A newly proposed technique could search for illicit nuclear weapons in orbit. Since 1967, nuclear weapons in space have ...

LAST year, I travelled to Hiroshima to represent the Campaign for Nuclear Disarmament at the 80th anniversary of the atomic bomb.