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From feces to fuel - scientist sees potential in poop-power

May 25 - Researchers are trying to convert human fecal waste into butanol to power cars of the future. Butanol is a high-energy fuel similar to gasoline. Using genetically engineered fungus, a scientist at Washington University in St. Louis believes it could one day be produced from one of the world' s most plentiful waste products. Ben Gruber has more.

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