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

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 House Energy and Commerce Committee’s text for Republicans’ “big, beautiful bill” to advance President Trump’s agenda and ...

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

In a 5-2 decision, the Colorado Supreme Court on Monday upheld a lower court’s ruling denying oil producers attempt to ...

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

The legal clash between Greenidge Generation and New York’s Department of Environmental Conservation will continue with a ...

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

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

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

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