America's Dirtiest Cities 2010

Denver, Colorado
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No. 28. Denver

5 of 33

The Mile High City keeps growing, but its environmental roots run deep enough to keep the air and streets clean. After all, with the Rockies staring you in the face from downtown, it’s tough to forget about Mother Earth.

Denver, Colorado

America's Dirtiest Cities 2010

No. 28. Denver

The Mile High City keeps growing, but its environmental roots run deep enough to keep the air and streets clean. After all, with the Rockies staring you in the face from downtown, it’s tough to forget about Mother Earth.

Getty Images
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