Maybe I'm nuts, but I still think chickens can save the world. I often describe them as "magic natural machines that can turn landfill-bound protein and carbohydrates into nitrogen fertilizer and healthy, fresh food".
I watched a program on restaurants and the narrator stated that there should be a small chicken yard built right next to every kitchen. Leftovers could be fed back to the chickens, which in turn would reduce the amount of waste going to the landfills and give you compost, fresh eggs and someday, meat. Of course, he was talking about (real food) kitchen restaurants and not fast (fake) food restaurants.