When did Horizon Season 12 Episode 17 air?
Horizon Season 12 Episode 17 aired on June 23, 1975.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 12 · Episode 17
The Cleanest Place in the World
Jun 23, 1975·1h
This report by Horizon brings you scientists that are using Antarctica as a giant natural lab to study who has polluted Earth most; man or nature.
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How long is Horizon Season 12 Episode 17?
This episode runs for approximately 60 minutes.
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