President Donald Trump inked a proclamation that exempts coal-using steel facilities from Biden-era regulatory updates to the ...

The justices on Monday added four new cases, involving the venue for challenges to the Environmental Protection Agency’s actions under the Clean Air Act and federal sentencing law, to its docket for ...

Troy Lake served seven months in prison for disabling emission control devices in at least 344 heavy-duty commercial trucks.

Get any of our free daily email newsletters — news headlines, opinion, e-edition, obituaries and more. Human burning of fossil fuels has caused atmospheric carbon dioxide to increase from 280 to 387 ...

When Congress passed the Clean Air Act in 1970, climate change wasn’t on anyone’s mind. Yet under an Obama-era decision known as the “Endangerment Finding,” the Environmental Protection Agency has ...

The National Association of Clean Air Agencies (“NACAA”) submitted April 10th comments to the United States Environmental Protection Agency (“EPA”) addressing a rule proposed on January 9th titled: ...

The 1967 Montana Legislature passed the Clean Air Act. It was as much, or more, the work of Republicans as it was of Democrats. That law, by cleaning up the air, provided a tremendous boost to ...

An Energy and Commerce hearing this week is expected to focus on two EPA actions. House Republicans are again taking aim at the Clean Air Act, citing the need to bolster the United States’ global ...

In the summer of 1943, thick smog blanketed Los Angeles, causing burning eyes, lung irritation, and even nausea—some feared it was a chemical attack. As the crisis grew, crops withered, and suspicions ...

Among the many obstacles to enacting federal limits on climate pollution, none has been more daunting than the Supreme Court. That is where the Obama administration’s efforts to regulate power plant ...

To judge by recent Supreme Court decisions, the world didn’t know much about climate change a half century ago. In 2007, when the court ruled that the Clean Air Act of 1970 gave the Environmental ...

The sky turns a rusty orange. The sun dims behind a thick veil of smoke. For millions of Americans, even ones far from wildfire-prone lands, this eerie scene is no longer rare. Extreme wildfires have ...