Dimming the Sun

April 18, 2006
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NOVA - S33 - E16

Dimming the Sun

Everyone has heard of global warming, but a lesser-known man-made phenomenon has been nearly as powerful at affecting Earth's climate. A look at global dimming, created by soot and pollution reflecting the sun's rays and surprisingly helping to offset global warming's catastrophic advance.

NOVA: Season 33 - 20 Episode s