Top 10 Greenest US Cities

Can you guess what they are?? I'll give you a clue....they are all urban cities. Just guess, I bet you can make 5/10!

Like this one (above) - I'll give you a clue, it's in the west and starts with a "B"?

Or this one....it's a little easier, just look at the skyline.

Check out the answers here:

http://cityguides.msn.com/green/greenarticle.aspx?cp-documentid=4848625&page=1