When did Horizon Season 17 Episode 9 air?
Horizon Season 17 Episode 9 aired on March 17, 1980.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Documentary report on the mounting evidence of the horrifying effects of the use of dioxin as a defoliant in Vietnam and as a herbicide in domestic use on both humans and all other living beings.
Direct answers for episode-level questions and details.
Horizon Season 17 Episode 9 aired on March 17, 1980.
This episode runs for approximately 60 minutes.
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