When did Horizon Season 15 Episode 22 air?
Horizon Season 15 Episode 22 aired on November 17, 1978.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 15 · Episode 22
The Big Sleep
Nov 17, 1978·1h
In this story, Horizon takes a look at the world's leading hibernation research projects.
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Direct answers for episode-level questions and details.
How long is Horizon Season 15 Episode 22?
This episode runs for approximately 60 minutes.
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