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The mystery of L.A.’s smog revealed

Season 37 Episode 4 | 4m 58s

The major breakthrough in understanding L.A.'s deadly smog came from a surprising place.

Corporate sponsorship for American Experience is provided by Liberty Mutual Insurance and Carlisle Companies. Major funding by the Alfred P. Sloan Foundation.
Extras
Watch a preview of Hard Hat Riot.
Watch a preview of Clearing the Air: The War on Smog.
Watch a preview of Clearing the Air: The War on Smog.
When smog issue plagued their city in the mid 20th century, Angelenos got creative.
How has L.A.'s history of smog shown up on the big screen?
We were told to "shake it like a Polaroid picture". But what if we got it wrong?
The women behind the camera.
Watch a preview of Mr. Polaroid.
The story of Edwin Land, whose iconic Polaroid camera let everyone instantly chronicle their lives.
The dramatic story of the passage of the Americans with Disabilities Act (ADA) in 1990.