The Clean Air Act also known as (CAA) is a comprehensive Federal law that regulates all sources of air emissions. The 1970 CAA authorized the U.S. Environmental Protection Agency (EPA) to establish National Ambient Air Quality Standards (NAAQS) to protect public health and the environment. In this episode of our Environmental Law series, host Craig Williams is joined by Trish McCubbin, a retired Professor of Environmental Law at the Southern Illinois University School of Law, as they spotlight CAA, its impact, progress, and how we as a society can reduce air pollution.