Diggester writes: Going green may now involve something a bit yellow, as four teenage girls show off a urine-powered generator at Makers Faire Africa. The small group of 14 and 15 year old girls had the ingenuity and inspiration to help change world with one bathroom trip at a time. Imagine powering your house or charge you electronic devices after making a trip to the little boy or girls room. It takes only one liter of urine to run the generator for 6 whole hours.
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