AIR QUALITY + PUBLIC HEALTH The EPA funded citizen science to address gaps in air monitoring. Will it result in cleaner air? Air Pollution Threatens Millions of Lives. Now the Sources Are Shifting Will Its $154 Billion Price Tag Keep Dust from Being Swept Under the Rug? In largest study of its kind, researchers track health effects of Hawaii wildfires Tracking Tire Plastics—and Chemicals—From Road to Plate California Farm Counties Are Not Even Close to Meeting the EPA’s New Clean Air Quality Standard Farm Runoff May Be Tied to Respiratory Illness Near the Salton Sea How a dangerous stew of air pollution is choking the United States Dust clouds are killing people out West—and the dangers could spread