The party-line vote marked the first time in the 55-year history of the Clean Air Act that Congress has moved to weaken the ...

Critics say the joint efforts are not a coincidence as the restructured agency air program moves to weaken pollution ...

U.S. Steel has applied for two-year exemptions from hazardous air pollutant rules for integrated iron and steel, coke and ...

If also passed by the House as expected, the action will be the first time Congress has weakened protections under the Clean ...

Court documents show that CARB intends to repeal the ACF regulations related to so-called "high-priority" fleets and drayage ...

Utah counties are struggling when it comes to clean air, according to a new report from the American Lung Association and ...

From Acadia to Zion, there are health concerns across the National Park System tied to poor air quality conditions that the ...

Colorado is now in severe violation of two federal ozone pollution standards, and it must find a way to reduce that pollution ...

Lawmakers voted to stop the state from requiring that an increasing share of new trucks sold there have zero emissions.

California Governor Newsom rebukes House Republicans' move to challenge the state's vehicle emissions standards.