Have you seen the images of urban smog from the 1960s? Although there is still progress to be made, U.S. air quality has dramatically improved over the past 50 years. We have the Clean Air Act to thank. Passed in 1970, the Act gave the newly formed EPA the legal authority to regulate air pollution. In this episode, ELI Staff Attorney Jarryd Page breaks down how the Clean Air Act works and why it matters today.