Watch Clearing the Air: The War on Smog

In 1943, dark, smoky clouds enveloped Los Angeles, causing residents to complain of burning eyes, nausea and difficulty breathing. The source of the smog was a mystery. Clearing the Air: The War on Smog is the story of the epic struggle for clean air, involving years of scientific study and civic pressure that would lead to the creation of the EPA and the Clean Air Act. From AMERICAN EXPERIENCE.

Clearing the Air: The War on Smog is a 2025 documentary with a runtime of 52 minutes.