The EPA lowered the annual standard for particulate matter smaller than 2.5 microns (PM2.5) from 12 to 9 micrograms per cubic meter (µg/m3) of air. The move comes in the wake of dozens of studies that have shown how the tiny particles can travel deep inside the lungs and heart, increasing the risk of heart […]
The post California Farm Counties Are Not Even Close to Meeting the EPA’s New Clean Air Quality Standard appeared first on Civil Eats.