One of the largest power plants in Illinois has been running without proper permits since it went into service, the Sierra Club contends in a lawsuit.

EPA announced details of its Good Neighbor Plan to slash emissions of smog-forming nitrogen oxides; the rules will affect power plants in 23 states.

EPA's KC Becker presented stakeholders with new opportunities to access funding from the Bipartisan Infrastructure Law and the Inflation Reduction Act.

The D.C. Circuit threw out a challenge from the Midwest Ozone Group to EPA's Cross-State Air Pollution Rule.

EPA reaffirmed the legal basis for its MATS rule, but there will be no immediate impact, as the 519 plants affected are already in compliance.

The U.S. Treasury Dept. updated its IRA qualification guidelines to base vehicle classifications on the model information listed on the car’s price sticker.

The Biden administration released a national plan to eliminate carbon dioxide and other GHG emissions from the nation’s transportation sector by 2050.

The EPA announced tough new emission standards for heavy-duty vehicles: cleaner trucks but not until the 2027 model year and not completely clean until 2045.

Under new U.S. policies, federal contractors will have to disclose their greenhouse gas emissions and climate risks.

EPA on Wednesday announced it is distributing nearly $1 billion in grants to 389 school districts across the U.S. to buy cleaner buses, most of them electric.