When did Horizon Season 10 Episode 30 air?
Horizon Season 10 Episode 30 aired on December 3, 1973.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 10 · Episode 30
An Element of Mystery
Dec 3, 1973·1h
This episode of Horizon documents the sources, uses, and properties of the element mercury and examines its role in modern society.
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How long is Horizon Season 10 Episode 30?
This episode runs for approximately 60 minutes.
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