A coalition of seven Utah counties and an infrastructure investment group have sought to construct an 88-mile (142-km) ...

The Supreme Court often releases one or two big, splashy environmental decisions each term. Last year it was overruling a ...

The U.S. Court of Appeals for the 5th Circuit ruled in Calumet that challenges by a group of small oil refineries to the EPA’s denial of their requests for exemptions from complying with the Clean Air ...

The Supreme Court ruled on June 20 that fuel industry groups have legal standing to challenge the Environmental Protection Agency’s waiver that allowed California to implement its Advanced Clean ...

The Supreme Court ... challenge to EPA’s approval of the California regulations is evident.” Justices Sonia Sotomayor and Ketanji Brown Jackson, two of the court’s three Democratic-appointed justices, ...

The U.S. Supreme Court sided with Utah in a case about clean air regulations on Wednesday, a decision the state's solicitor general says could simplify future disputes.

The 7-2 ruling held that the U.S. Court of Appeals for the District of Columbia Circuit, and not the New Orleans-based 5th U.S. Circuit Court of Appeals, is the proper court to hear a lawsuit by ...

High court gives gas producers legal standing to sue over 'harming' regulations. In this case, not selling as much fuel as ...

EPA, 145 S. Ct. 704 (2025), that EPA exceeded its statutory authority when it included “end-result” provisions that hold permittees liable for the quality of the receiving water in NPDES permits.

The justices in a 7-2 ruling overturned a lower court's decision to dismiss the lawsuit by a Valero Energy VLO.N subsidiary ...

In 2022, the U.S. Supreme Court overturned the Clean Power Plan, ruling that the EPA lacked authority under section 111 of the federal Clean Air Act to require existing power plants to shift ...