Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 21 · Episode 10 ·
Signs of the Apes, Songs of the Whales
Horizon investigates the linguistic potential of non-human species.
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Episode 10 of season 21 of Horizon: “Signs of the Apes, Songs of the Whales”. Aired 1984-03-26. Watch it online free on ZapFlix.