A test of the first hydrogen bomb by the U.S. in 1952 as part of Operation Ivy. (Photo courtesy of National Nuclear Security Administration/Nevada Site Office)

Skies darkened by smoke worldwide. Cities in ruins, leaving millions dead. Droughts and crop failures spreading famine for years. The realities of nuclear war are difficult to imagine. But, says a team of researchers, they deserve our attention.

New research in Science Advances spells out the potential ramifications of nuclear warf