Extras
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?
The major breakthrough in understanding L.A.'s deadly smog came from a surprising place.
Watch a preview of Clearing the Air: The War on Smog.
Watch a preview of Clearing the Air: The War on Smog.
We were told to "shake it like a Polaroid picture". But what if we got it wrong?
The story of Edwin Land, whose iconic Polaroid camera let everyone instantly chronicle their lives.