Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 47 · Episode 5 ·
Why Do We Talk?
Talking is something that is unique to humans, yet it still remains a mystery. Horizon meets the scientists beginning to unlock the secrets of speech - including a father who is filming every second of his son's first three years in order to discover how we learn to talk, the autistic savant who can speak more than 20 languages, and the first scientist to identify a gene that makes speech possible.
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Episode 5 of season 47 of Horizon: “Why Do We Talk?”. Aired 2009-11-10. Watch it online free on ZapFlix.