Global Warming and Global Dimming

December 20, 2009 • Daily Email Recap

Thanks to Philip Wollen of the Winsome Constance Kindness Trust of Australia for this link to a BBC/Horizon film on global dimming. This phenomenon resulting from airplane contrails and other pollution is causing the global warming triggered by CO2 to occur more slowly than would otherwise occur. In other words, without this pollution reflecting sunlight, the rate of warming would increase. But the pollution causing global dimming reduces the rainfall that provides food for over half the world’s people. While we must reduce pollution to save the monsoons of the Sahel, East Africa and South Asia, the consequences may be accelerated warming. This film is well worth watching

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