Published June 30, 2011
San Francisco took the title as the greenest city in North American in a study of the environmental performance and commitments by 27 major metro areas in the U.S. and Canada. To claim the top spot in North America, San Francisco bested contenders that included Vancouver, New York, Seattle, Denver and Boston.
The 27 cities examined in the study were ranked based on scores in nine areas — CO2, energy, land use, buildings, transport, water, waste, air and environmental governance. Thirty-one indicators were evaluated across the nine categories, as shown in the chart at the foot of the page.
Here are the rankings for the cities and their overall scores: