Image credit: macieklew/Flickr Since TreeHugger Best of Green winner Chipotle Mexican Grill cut ties with McDonald's in 2006, it has embraced "food with integrity" as a guiding principle. As Chipotle Founder Steve Ells recently told smartplanet, its as much about changing the way people think about "fast food" as it is about creating the tastiest, most human...Read the full story on TreeHugger