From Gunpowder to Teeth Whitener: The Science Behind Historic Uses of Urine | Surprising Science.

Another interesting article from Smithsonian, this one’s about the possibilities of pee 😉 I knew they used to use it for all kinds of things like cleaning fabrics, softening leather, making gunpowder… but brushing your teeth with it???!! I don’t think I would want to go there. They also mention people drinking (?!?!) it for the health benefits (urotherapy- in the comments). It can power a cell phone! I love this magazine, I learn something new from it every time I get it:-)