On October 30, 1961, the Soviet Union tested the largest nuclear device ever created. The "Tsar Bomba," as it became known, was 10 times more powerful than all the munitions used during World War II.

Lise Meitner developed the theory of nuclear fission, the process that enabled the atomic bomb. But her identity — Jewish and a woman — barred her from sharing credit for the discovery, newly ...

It may be 80 years since an atomic bomb fell on the Japanese city of Hiroshima but for Tetsuko known as ‘Tess’ McKenzie, the memories remain vivid. “Suddenly stronger lights went through the eyes. I ...