Dimming The Sun

Apr 18, 2006 on PBS at 9:00 PM


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 offse... (more)t global warming's catastrophic advance.

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Voyage To The Mystery Moon
Season 33 Episode 9

Apr 04, 2006

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Building On Ground Zero
Season 33 Episode 11

Sep 05, 2006

Guest stars

Kathryn Walker