When did Horizon Season 30 Episode 20 air?
Horizon Season 30 Episode 20 aired on June 21, 1993.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 30 · Episode 20
Chimp Talk
Jun 21, 1993·1h
This documentary by Horizon looks back into the 1980's where the work of pioneer researchers trying to determine if chimpanzees could understand language was attacked as charlatanism. Now the public opinion has moved back in favour of the idea that apes can indeed talk to us. The program looks at the latest developments in the chimpanzee language laboratories in America.
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How long is Horizon Season 30 Episode 20?
This episode runs for approximately 60 minutes.
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