what do these things have in common?
a common solution!
apparently, you can have your cow and heat with it too
http://www.fastcoexist.com/3028933/these-backpacks-for-cows-collect-their-fart-gas-and-store-it-for-energy?partner=rss
These Backpacks For Cows Collect Their Fart Gas And Store It For Energy
Each cow apparently passes enough gas to power a car or a fridge. Imagine the possibilities.
