In this Jan. 22, 2010 photo, a ground-level flare roars at a well site in western Wyoming's Upper Green River Basin, where ozone levels last week exceeded the worst days in major U.S. cities last ... more 
In this Jan. 22, 2010 photo, a ground-level flare roars at a well site in western Wyoming's Upper Green River Basin, where ozone levels last week exceeded the worst days in major U.S. cities last year. Local residents complain of runny eyes, nosebleeds and shortness of breath and say the air is hazy. Gas industry officials say they're taking steps to reduce air pollution. less 
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Associated Press | Photo By Mead Gruver
Wed, Mar 9, 2011 6:25 AM EST