Originally produced as an episode of the television program Nature in 1999. Includes "Helps save the gorillas" featurette.
Principal camera, Ronald H. Cohn ; edited by Beth Gallagher, Steve Vincent ; music composed by Laura Karpman.
Narrated by Martin Sheen.
Documents Dr. Penny Patterson's nearly thirty-year relationship with Koko, a western lowland gorilla she taught to communicate with American Sign Language, and considers whether what Koko has learned will be passed to future generations of gorillas.
5-8$b Follett Library Resources
DVD.