America's Air Pollution: Progress and Peril

Despite decades of progress, nearly half of Americans still breathe unhealthy air, a new report reveals. Air pollution is linked to increased mortality, reduced life expectancy, and higher asthma rates. California cities and the Los Angeles area suffer the worst pollution, disproportionately impacting minorities. The Trump administration's consideration of rolling back air quality regulations has sparked concern among health experts, who warn of widespread public health consequences. While the Clean Air Act has been a major success, climate change-fueled wildfires and government budget cuts threaten further improvements in air quality.