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our pee has been very useful throughout history, being used for tanning hides, cleaning clothes, making gunpowder, and brushing teeth to make them whiter.

Oct 8, 2022•1 min read

Fun Fact: our pee has been very useful throughout history, being used for tanning hides, cleaning clothes, making gunpowder, and brushing teeth to make them whiter.

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smithsonianmag.com

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