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 ...

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 ...

California has agreed to formally repeal much of its controversial Advanced Clean Fleets electric-truck mandate as part of a ...

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 ...

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

American Lung Association report found that about 156 million people live in counties plagued by high levels of ozone and ...

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.

When it comes to regulating motor vehicle emissions, California has long been different. California was the first state in the nation to ...