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Ecology

Researchers say even a limited nuclear exchange would threaten all life on Earth. (Getty Images)

Study: ‘Small’ Nuclear War Would Destroy The World

With an estimated 17,000 nuclear weapons in the world, we have the power to exterminate humanity many times over.

03/26/2014

Beetle-killed trees (credit: CBS)

Study Shows Drought Sped Pine Beetle Epidemic

University of Colorado researchers say the 2001-02 drought and others greatly accelerated the spread of a beetle epidemic that has killed thousands of square miles of trees in the West.

11/05/2012

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