When did Horizon Season 20 Episode 7 air?
Horizon Season 20 Episode 7 aired on February 28, 1983.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon reports on the state of scientific research in Britain and the past blunders of the National Research Development Council.
Direct answers for episode-level questions and details.
Horizon Season 20 Episode 7 aired on February 28, 1983.
This episode runs for approximately 60 minutes.
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