Green and fresh! That's the way you envision your life. Problem is, your life seems pretty darn carbon heavy, and a move sounds better and better. Believe it or not, city living is an eco-friendly choice, and if you play it smart, it's cheaper too. Since everything's in close range, you can ditch the car, ride your bike to work, walk, or take public transportation. And don't hesitate to move to a green city: portland, san francisco, austin, honolulu and denver are great possibilities.