urine battery...ew.

"turning pee into power"...

"Urine is one of a number of bodily fluids rich in ions—electrically charged atoms. Researchers in Singapore leveraged this fact to produce a credit card-size battery (bottom) powered by urine. The device produces about 1.5 volts, the same as a standard AA battery, and can last for 90 minutes." for the whole article go here:

http://news.nationalgeographic.com/news/2005/08/0818_050818_urinebattery.html

& you know...someone got a grant to study this...