Today, the U.S. Court of Appeals for the D.C. Circuit upheld the national, health-based limit on fine particulate matter (PM2.5), also known as soot, that the Environmental Protection Agency (EPA) strengthened in 2024.Soot, made up of tiny toxic particles that lodge deep in the lungs, results in sev...

A federal appeals court has rejected the Environmental Protection Agency’s attempt to abandon a Biden-era rule that sets tough standards for deadly soot pollution.

Today, the U.S. Court of Appeals for the D.C. Circuit upheld the national, health-based limit on fine particulate matter (PM2.5), also known as soot, that the Environmental…