National Geographic News, Reporting Your World Daily

Thursday, October 28, 2010

Photo: Watermelon Juice May Be Next "Green" Fuel


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Unlike the round, red, juicy melons that often grace picnic tables in the summer, up to a fifth of all watermelons produced in the U.S. are scarred or deformed and so are left on the vine, an August 2009 study says.

But the sugary juice from those reject melons has promise as a source of the biofuel ethanol, the study authors report.

Photograph by Alberto Cassio, Imagestate/Photolibrary