Clean air in Pittsburgh? Don't hold your breath
"Although the region has made great strides, Pittsburgh still sits near the top of two measures of air pollution in an annual American Lung Association study. The Pittsburgh-New Castle region -- defined by the association in its annual State of the Air study as Beaver, Allegheny, Armstrong, Lawrence, Washington and Westmoreland counties -- ranked as the sixth-most polluted city in two categories: year-round particle pollution and short-term particle pollution."http://www.timesonline.com/news/local_news/clean-air-in-pittsburgh-don-t-hold-your-breath/article_fc18a6c7-16cf-50ef-b673-558a65a63e73.html
