TV American Experience - Season 37 Episode 4 : Clearing the Air: The War on Smog American Experience - Season 37 Episode 4 : Clearing the Air: The War on Smog 6.6/10 by 43 users A chronicle of how Los Angeles' devastating smog problem in the 1940s and 50s led to the creation of the Environmental Protection Agency (EPA) and the Clean Air Act. Details Casts Posters Images Title American Experience - Season 37 Episode 4 : Clearing the Air: The War on Smog Alternative Titles The American Experience First Air Date 1988-10-04 Last Air Date 2026-01-06 Number of Episodes 400 Number of Seasons 38 Genres Documentary, Networks PBS, Casts Plot Keywords , Episodes List American Experience Season 37 :Episode 1 Forgotten Hero: Walter White and The NAACP Forgotten Hero: Walter White and The NAACP 2025-02-24 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 2 Change, Not Charity: The Americans with Disabilities Act Change, Not Charity: The Americans with Disabilities Act 2025-03-24 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 3 Mr. Polaroid Mr. Polaroid 2025-03-31 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 4 Clearing the Air: The War on Smog Clearing the Air: The War on Smog 2025-08-26 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 5 Hard Hat Riot Hard Hat Riot 2025-09-30 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 6 Kissinger (1): The Necessity of Power Kissinger (1): The Necessity of Power 2025-10-27 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 7 Kissinger (2): The Opportunist Kissinger (2): The Opportunist 2025-10-28 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today. American Experience Season 37 :Episode 8 Bombshell Bombshell 2026-01-06 TV's most-watched history series brings to life the compelling stories from our past that inform our understanding of the world today.