My city council rep, Jean Quan, has a great set of 25 Ways to Keep Oakland Green. One huge one she doesn't list is going meatless one day a week. Just one day a week makes a huge difference -- equivalent to switching from a 22MPG to 50MPG car. I've been vegetarian (still eating a little fish and dairy) for about 10 years, and it gets easier all the time. One day a week should be a snap, so give it a try. To get you started, Becks over at Living in the O has a nice run down of some vegetarian restaurants in Oakland.