When did Horizon Season 15 Episode 18 air?
Horizon Season 15 Episode 18 aired on September 8, 1978.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 15 · Episode 18
Bags of Life
Sep 8, 1978·1h
Horizon investigates the composition and structure of the membrane that surround individual cells.
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Direct answers for episode-level questions and details.
How long is Horizon Season 15 Episode 18?
This episode runs for approximately 60 minutes.
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