Oregon’s attempts to curtail diesel emissions are in jeopardy following a state decision to delay enforcement of the Advanced ...

There are 25 million more people living with bad air than last year's report showed, according to air quality data from the ...

Environmental groups warned the proposals would pave the way for more oil and gas industry activity on public lands.

The Center for Biological Diversity (“CBD”) filed a May 8th Clean Air Act Title V Petition to Object (“Petition”) before the United ...

There are 25 million more people living with bad air than last year's report showed, according to air quality data from the ...

The rule delay comes as the Republican-controlled Congress is working to revoke California’s Clean Air Act waivers — the same ...

A trio of congressmen are co-leading the Locomotives Act, to stop California from imposing some regulations on trains operating across state lines.

Better wood and better stoves are key components of cleaner air in a cold-weather region where atmospheric inversions trap ...

They also called for a pragmatic energy transition roadmap, immediate enactment of a Clean Air Act, and the enforcement of strict emissions standards for power plants under the Air Pollution Control R ...

Air quality was improving across the country after the passage of the 1963 Clean Air Act, Pruitt said, but 10 years ago, progress halted. Increasing extreme heat events and wildfires have led to ...

The act seeks to revise the Clean Air Act, limiting California's ability to enforce stricter-than-federal emissions standards. Supporters argue California's regulations could negatively impact ...