What a Crappy Year...
When I posted a slideshow back in 2009 on the year in pee and poop, many people assumed it was a joke.
But the fact is, sanitation issues are crucially important to a safe, stable and sustainable society.
From astronauts drinking their own pee to urinals in trees and diaper-eating mushrooms, this year we've seen some awesome stories on how we might better handle our human waste. Here are a few of our favorites.