05/12/2010 05:12 am ET Updated May 25, 2011

Denver Ranked Seventh Greenest City In U.S.

Denver ranks in seventh place among 43 U.S. metro areas in a report on America's "green cities."

The "Green Cities Index" ranks metro areas on a variety of environmental factors, including traffic congestion, transit use, water quality, carbon emissions, LEED-certified projects and number of "green" jobs.

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