When did Horizon Season 25 Episode 20 air?
Horizon Season 25 Episode 20 aired on May 16, 1988.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 25 · Episode 20
The Hope of Progress
May 16, 1988·1h
Horizon interviews the scientist and Nobel prize winner, Peter Medawar.
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Direct answers for episode-level questions and details.
How long is Horizon Season 25 Episode 20?
This episode runs for approximately 60 minutes.
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