Pee and poop is not just a reason for toilet humor. In fact human waste can be deadly serious. In 2011, there were a lot of stories on how we might answer nature's call a little differently. Here are our favorites.
Never dreamed poop could get you blazing down the asphalt? Well, now it all comes true as Japan's biggest toilet maker, TOTO, takes the toilet on the road with its launch of the Toilet Bike Neo, a bike that's powered entirely by human