Everybody knows that a lot of biodegradable waste can actually be put to good use: papers can be recycled, compost is used in gardens and bio-gas plants are used to supply gas to homes in some Indian villages to cook food. It was only a matter of time that somebody decided to try and use urine as fuel.
Well, not directly. Scientists at Ohio University actually used a nickel-based electrode to make cheap hydrogen from urine, reports Discovery.
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