When did Horizon Season 25 Episode 3 air?
Horizon Season 25 Episode 3 aired on January 18, 1988.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
In the report by Horizon, they looks at manic depression and how is now known that it has a strong genetic component.
Direct answers for episode-level questions and details.
Horizon Season 25 Episode 3 aired on January 18, 1988.
This episode runs for approximately 60 minutes.
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