When did Horizon Season 7 Episode 16 air?
Horizon Season 7 Episode 16 aired on May 11, 1970.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
An investigation by Horizon reveals information about the use of artificial additives and preservatives in the manufacture of modern processed foods.
Direct answers for episode-level questions and details.
Horizon Season 7 Episode 16 aired on May 11, 1970.
This episode runs for approximately 60 minutes.
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