February 28, 2019 / Modified feb 28, 2019 10:32 a.m.

Koko - The Gorilla Who Talks

Learn about the late gorilla who redrew the line between people and animals.

Learn about Koko, the gorilla who redrew the line between people and animals for more than 40 years. In 1971, Penny Patterson began teaching sign language to Koko, unaware that this relationship would define both their lives.

Koko - The Gorilla Who Talks, Wednesday at 8 p.m. on PBS 6.

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