I've Seen the Future: Poo-Powered Street Lights!
If you've got a dog, you've got poo. The question is: What should you do with it? There are many, many options available to you. (All of which I will leave to the imagination for now.) However, if you're ecologically-minded, you might try using it as fuel.
A dog park in Cambridge, MA, has recently installed a "methane digester," which takes unwanted pooch poo and uses it to power street lights, a tea cart, and a popcorn machine. (Not sure how I feel about that last one.)
Apparently it's a pretty easy process turning poo into power. (You can read more about it here.) Which makes me think . . .