4 ms·
What causes the poor air quality? There are no obvious pollution sources other than cars.
by jjawssd 9y ago
What causes the poor air quality? There are no obvious pollution sources other than cars.
- getemback 9y agoThere are still major steel works in the area, some of which are operating with grandfathered emissions limits. Also Pittsburgh receives the wind-blown emissions of practically every coal-fired power plant in the nation.