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 Supreme Court on Wednesday issued two rulings on where certain challenges to actions taken by the Environmental Protection Agency under the Clean Air Act must be filed. In the […] ...

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 ...

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 U.S. Supreme Court sided on Friday with fuel producers that had opposed California's standards for vehicle emissions and electric cars under a federal air pollution law, agreeing that their legal ...

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 ...

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.