There are people out there who use urine to whiten their teeth. I can tell you how it works. Only you can decide whether you think it's worth it.
Urine doesn't look particularly spectacular when it's sprinkled over a toilet seat, but in the 19th century, it was proof that organic life was truly special. Until a scientist came along and destroyed everyone's pee-based delusions of grandeur.
Going by the name "urea breath test," this isn't so much a test as what doctors call the least-popular resident in med school. And just as a bonus, there's radiation involved! Find out why you would be forced to endure this medical procedure.
The Chinese soft-shelled turtle looks like someone glued the snout of a pig onto the face of a fish, with the texture of a scrotum for good measure. But its bizarre appearance pales in comparison to an even more bizarre, and newly discovered, habit: it urinates through its mouth.