Add Yahoo as a preferred source to see more of our stories on Google. If the largest nuclear bomb ever designed by the Soviet Union were dropped on downtown Atlanta, anything within a nearly five-mile ...

Nuclear bomb effects computer in pocket. Also issued online. NASM copy: Circular computer lacking. MSRL copy "Changes as of Feb. 1964" inserted. 1. General principles of nuclear explosions -- 2.

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Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad President ...

During the late 1970s, the United States developed a nuclear weapon designed not to flatten cities but to kill the people inside them. The neutron bomb, formally known as an enhanced radiation weapon, ...

As tensions between Israel and Iran escalate, the airwaves are full of alarmist commentary. Military analysts and political leaders alike are warning that Tehran is "on the brink" of possessing a ...

Tick. Tick. Tick. Eighty years ago this month, the doomsday clock jolted to life. Nothing was the same after Aug. 6, 1945. On that date, the first of two American atomic bombs went off in Hiroshima, ...