MTC3. Gavin Newsom, San Francisco.
Another mack daddy of sustainability, Newsom is almost too green to believe. Since he took office in 2004, the city has reduced government emissions to below 1990 levels, launched the nation’s largest solar incentive program, banned plastic bags, and introduced ambitious green building and green jobs programs. Sometime in the not-too-distant future, city leaders hope to increase wind power by the Bay, including underwater turbines at the Golden Gate Bridge. Speaking at a conference of green IT entrepreneurs this spring, Newsom — who also recently confirmed his 2010 gubernatorial ambitions — offered up his city as guinea pig: “If you have an idea, let me know. We are a laboratory for innovation.”