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 ...

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

The Clean Air Act (CAA) is now 55 years old—and shows its age. That's not a critique of its legacy. The law, in conjunction with innovation and private investment in environmental improvement, has ...

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

NPCA submitted the following position to members of the House Committee on Energy and Commerce ahead of a markup scheduled for December 10, 2025. H.R. 6373 would undo longstanding protections under ...

xAI continues to face backlash over its Memphis data center, as the NAACP joined groups today appealing the issuance of a recently granted permit that the groups say will allow xAI to introduce major ...

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