What makes a city green? Well, no matter what the local government is doing it really comes down to the residents who live there. We went looking for places were large segments of the population recycle, drive fuel efficient cars or use alternative transportation, save energy and are focused on keeping Mother Earth looking her best. Kermit the Frog was right, "It's not easy being green." But these places sure make it look like second nature. Click the arrow to see the list.