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Pennsylvania hills and valleys like Thailand; Is air as dirty?

Millersville professor says topography contributes to region's air pollution
By Scott LaMar/WITF

Pa. measures air quality with colors. Here’s what they mean

Air quality reached red, purple and maroon levels in different parts of Pennsylvania on Thursday.

By Rachel McDevitt/StateImpact Pennsylvania

Central Pa. air quality worsens in one measure for third straight year

The new State of the Air report from the American Lung Association finds the Harrisburg area worsened in daily particle pollution for the third straight year.

By Rachel McDevitt/StateImpact Pennsylvania

In Pa. cities, street trees can help cool ever-hotter temps. But they present their own problems to solve

Places like Harrisburg are planting more trees to improve the urban canopy. But if roots of trees buckle a sidewalk, for example, a homeowner is on the hook — which leads some to resist.

By Adriana Delagarza

Even moderate air pollution in Allegheny County raises ER visits for kids with asthma, study finds

Even moderate amounts of air pollution increase the number of children going to emergency rooms for asthma in Allegheny County, a new study finds. 

By Reid Frazier/StateImpact Pennsylvania