AP photographer Efrem Lukatsky has visited the Chernobyl power plant and the highly contaminated zone dozens of times since a 1986 reactor explosion caused the world’s worst nuclear accident. He ...

A black and white image of the smoking, damaged building and reactor (Image credit: Sovfoto/Universal Images Group via Getty Images). The Chernobyl plant used four Soviet-designed RBMK-1000 ...

Summary: The Alfa-class submarine, developed by the Soviet Union during the Cold War, was an innovative but problematic vessel. Its titanium hull and unique lead-bismuth-cooled reactor allowed it ...

A nuclear-powered car sounds like something straight out of science fiction, but it was actually something people were considering in the 1960s.

As the Soviet Union disintegrated, Thomas L. Neff came up with an improbable idea. What if Soviet nuclear warheads could light up American cities rather than obliterate them? What if the United ...