Top ten most Green Cities

1. Portland, Ore.

2. San Francisco, Calif.

3. Boston, Mass.

4. Oakland, Calif.

5. Eugene, Ore.

6. Cambridge, Mass.

7. Berkeley, Calif.

8. Seattle, Wash.

9. Chicago, Ill.

10. Austin, Tex.

http://www.popsci.com/environment/article/2008-02/americas-50-greenest-cities?page=1