Buried in a proposal on natural disaster recovery is a bid to free pyrolysis plants from federal emission rules ...

Cars on the road today are 99% cleaner than they were in 1970. Air quality in the United States is much, much better as a ...

After a bad administrative rule and adverse court finding, Food & Water Watch is appealing to require factory farms to ...

After years of failing to meet Clean Air Act standards, metro Phoenix won its argument that nonlocal ozone shouldn't count.