Next time you hop on a bus in Oslo, it might not run on regular gas. Instead, it may be running on methane fermented from human waste. Awesome?
Apparently, a year's worth of human excrement is equal to a measly 2.1 gallons of diesel, but when you collect an entire city's worth of crap, you get a decent amount of fuel. The poop of 250,000 people is enough to operate 80 buses for 99,750km each, which is no small thing. So in Norway, they're going to start collecting it and running public transportation on it. Because hey, why not? [Slate via Technabob]