Saw a nice video on the dispute of apes' mastery of sign language over at NPR: https://www.npr.org/sections/health-shots/2017/07/25/538580495/what-are-the-plane

Saw a nice video on the dispute of apes' mastery of sign language over at NPR: https://www.npr.org/sections/health-shots/2017/07/25/538580495/what-are-the-planet-s-real-talking-chimps-and-gorillas-saying https://www.npr.org/sections/health-shots/2017/07/25/5385804...