Clean Air Act

A big ruling in a federal suit brought against the state aims to force more regulation of one of the biggest sources of air pollution: oil refineries.

EPA.gov

If you put thousands of cows or chickens or hogs in a confined area, it’s likely to produce a powerful aroma. But can it harm your health?

A coalition of community and environmental groups says "yes." And they're asking for regulations on high-intensity livestock operations they say violate air pollution standards.