Republican members of Congress launched efforts to illegally undo California’s clean car standards today, undermining the Clean Air Act and the state’s authority to adopt strong emissions rules.

Trump administration's proposed rollbacks of federal clean air rules could result in 200,000 premature deaths and 10,000 ...

South Dakota’s wind energy production accounted for more than half of the state’s in-state net power generation.

A Montana coal plant with a history of fighting environmental rules aims to partake in the Trump administration’s plan to ...

A bill in the Montana Legislature that would limit state officials' ability to regulate air quality standards has advanced to ...

The facility, in Colstrip, Mont., used a new E.P.A. system for requesting special waivers from President Trump.

The Trump administration’s attempt to roll back numerous vehicle pollution standards has left states wondering what’s next.

Of the two bills, one targets outdoor air quality, the other looks to tackle indoor air pollution.

Mass firings and regulatory rollbacks come as scientists routinely determine pollution is far more damaging than previously ...

Moms React to EPA Director Boasting of Closing Museum, "Take This Show on the Road!"President Trump's Administrator of the Environmental Protection Agency (EPA), Lee Zeldin, is promoting a video ...

The Government Accountability Office's "decision to adversely opine on an agency’s efforts to comply with the CRA is a ...

Annika Bennion, Sidney native and advocate with the American Cancer Society Cancer Action Network (ACS CAN), was in Helena on ...