For those scientists who study urine the saying is quite literal—pee is a treasure-trove of scientific potential. It can now be used as a source of electric power. Urine-eating bacteria can create a strong enough current to power a cell phone. Medicines derived from urine can help treat infertility and fight symptoms of menopause.
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From Gunpowder to Teeth Whitener: The Science Behind Historic Uses of Urine
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NCBI Bookshelf. Boston: Butterworths; O'Brien, III.