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Watch NOVA Season 33 Episode 16 Online

  • 6.9/10
  • COUNTRIES: United States of America
  • Subtitles: English

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.