In addition to significantly reducing carbon dioxide emissions that otherwise would be emitted from using gasoline, scientists from the Carnegie Institution's Department of Global Ecology have found that expansion of the sugarcane crop in areas previously occupied by other Brazilian crops cools the local climate.
It accomplishes this by reflecting sunlight back into space and by lowering the temperature of the surrounding air as the plants "exhale" cooler water, a Carnegie release reported Monday.
http://www.upi.com/Science_News/2011/04/18/Sugarcane-seen-as-global-warming-weapon/UPI-57981303167617/
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