When did Horizon Season 10 Episode 28 air?
Horizon Season 10 Episode 28 aired on November 5, 1973.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon looks at the rise in the number of people who smoke and the real health risks.
Direct answers for episode-level questions and details.
Horizon Season 10 Episode 28 aired on November 5, 1973.
This episode runs for approximately 60 minutes.
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