When did Horizon Season 21 Episode 20 air?
Horizon Season 21 Episode 20 aired on December 3, 1984.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 21 · Episode 20
Ivan
Dec 3, 1984·1h
In this documentary, Horizon spends a week with a victim of Parkinson's disease and how he has to use considerable muscular effort in order to cope with day-to-day life.
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How long is Horizon Season 21 Episode 20?
This episode runs for approximately 60 minutes.
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