Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 28 · Episode 7 ·
California Dreaming
This Horizon documentary presents the US auto industry's response to clean-up the air in Los Angeles, California by the year 2007.
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Episode 7 of season 28 of Horizon: “California Dreaming”. Aired 1991-02-11. Watch it online free on ZapFlix.