[Global Warming Fact of the Day] A switch from ethanol to gasoline in São Paulo...

Timothy J. Reed
Timothy J. Reed 10:14am May 5
A switch from ethanol to gasoline in São Paulo caused a 20% drop in local ozone levels. http://bit.ly/1rVxF9j
Switch From Ethanol to Gasoline Causes Ozone Levels to Drop 20%
dailyfusion.net
When fuel prices drove residents of São Paulo, Brazil, to mostly switch from ethanol to gasoline, lo...

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