When did Horizon Season 8 Episode 4 air?
Horizon Season 8 Episode 4 aired on February 1, 1971.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
This episode of Horizon looks at the growing arsenal of nuclear weapons over the last 25 years and the effects it has on the arms race.
Direct answers for episode-level questions and details.
Horizon Season 8 Episode 4 aired on February 1, 1971.
This episode runs for approximately 60 minutes.
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