'Nuclear winter' still threat, scientists say

From: Oakland Tribune | Date: December 12, 2006| Author: Ian Hoffman | Copyright information

SAN FRANCISCO -- With superpower nuclear arsenals having plummeted to a third of 1980s levels and slated to drop by another third, the nightmarish visions of nuclear winter offered up by scientists during the Cold War have receded.

But they haven't gone away.

Researchers at the American Geophysical Union's annual meeting warned Monday that even a small regional nuclear war could burn enough cities to shroud the globe in a black smoky shadow and usher in the manmade equivalent o...

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