135 Million People Are Breathing Unhealthy Air in the U.S. 3 min read Education People Social 135 Million People Are Breathing Unhealthy Air in the U.S. Pep Unlimited LLC October 6, 2021 Air in the U.S. dramatically worse than in prior years More than 135 million Americans live with... Read More Read more about 135 Million People Are Breathing Unhealthy Air in the U.S.