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 ...

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

Sen. Brian Schatz delivered remarks on the Senate floor today standing against S.J. Res 31, a Republican-led resolution that ...

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 ...

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

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

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

The number steadily dropped for over a decade as Clean Air Act protections kicked in. Then, the trend stalled. “In many places we started to see ozone and particle pollution trends reverse ...

The U.S. EPA said it will fine a Burns Harbor steel mill slag processor $190,000 in a settlement for federal Clean Air Act violations.

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

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