We've all heard the arguments, pro and con, about genetically modified crops. But how would you feel about genetically modified livestock? Specifically, would you buy a side of bacon sliced from the carcass of the patented Enviropig, who's been genetically modified to produce a more environmentally friendly manure?

Chipotle’s a restaurant chain, but there's little to link it to the conventional fast food joints this country's used to, if you don't count the fact that McDonald's is their biggest backer. Besides, hasn't McDonald's proven to be pretty progressive in some ways? They deep-sixed the styrofoam packaging, took a pass on genetically modified potatoes, and partnered with Paul Newman to upgrade their salad dressings.