Biden Moves to Tighten Limits on Deadly Air Pollution

New York Times: “It would be the first time in more than a decade that the federal government cracks down on a contaminant responsible for thousands of premature deaths every year.”

“Fine particulate matter comes from smokestacks, construction, trucks, power plants and other industrial activity. It has a diameter of no more than 2.5 micrometers, one-thirtieth the width of a human hair, and can become embedded in the lungs. It is linked to heart attacks, stroke and respiratory ailments.”