When did Horizon Season 19 Episode 21 air?
Horizon Season 19 Episode 21 aired on December 13, 1982.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 19 · Episode 21
The State of the Planet
Dec 13, 1982·1h
Documentary on the discussions at the second UN Environment Conference,in London in 1982,illustrating the points made in the debates on the possible future of the planet.
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How long is Horizon Season 19 Episode 21?
This episode runs for approximately 60 minutes.
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