Watch Koko the Gorilla Use Sign Language in This 1981 Film | National Geographic

Watch Koko the signing gorilla in this clip from a 1981 National Geographic documentary. Koko died in her sleep on Tuesday, June 19, 2018. ➡ Subscribe: About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. Get More National Geographic: Official Site: Facebook: Twitter: Instagram: Read more in “Why Koko the Gorilla Mattered“ Watch Koko the Gorilla Use Sign Language in This 1981 Film | National Geographic National Geographic https://www