When did Horizon Season 14 Episode 15 air?
Horizon Season 14 Episode 15 aired on September 2, 1977.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 14 · Episode 15
The River That Came Clean
Sep 2, 1977·1h
This is a report by Horizon on the successful clean-up of the River Thames in Britain.
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Direct answers for episode-level questions and details.
How long is Horizon Season 14 Episode 15?
This episode runs for approximately 60 minutes.
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