When did Horizon Season 12 Episode 11 air?
Horizon Season 12 Episode 11 aired on May 5, 1975.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 12 · Episode 11
Brain Poison
May 5, 1975·1h
Horizon presents an investigation into the effects on health of lead in the urban atmosphere.
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Direct answers for episode-level questions and details.
How long is Horizon Season 12 Episode 11?
This episode runs for approximately 60 minutes.
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