When did Horizon Season 19 Episode 4 air?
Horizon Season 19 Episode 4 aired on February 1, 1982.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon explores what might happen when fossil fuel sources are depleted.
Direct answers for episode-level questions and details.
Horizon Season 19 Episode 4 aired on February 1, 1982.
This episode runs for approximately 60 minutes.
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