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 ...

The Senate voted Thursday to overturn an Environmental Protection Agency rule limiting the seven most hazardous air ...

The Department of Justice wants the courts to block New York's Climate Change Superfund Act, which charges oil and gas ...

S.J. Res 31, from Sen. John Curtis (R-Utah), would repeal Clean Air Act regulations issued last September as a replacement ...

Republicans say the U.S. Environmental Protection Agency was wrong to reinstate the state's air pollution lawsuit policy ...

This week, the House of Representatives voted to block the state’s ban on the sale of new gas-powered vehicles, challenging ...

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

The safeguards closed a loophole by requiring all “major” sources of seven hazardous air pollutants to maximize their emissions reductions.

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

The House on Wednesday voted to axe California’s clean truck rules — defying Congress’s own internal watchdog in doing so.

Air quality across the country has improved dramatically since regulations like the Clean Air Act were put in place in the ...

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