Discusses what is known about the intelligence of our nearest relatives, the great apes, including chimpanzees, bonobos, orangutans, and gorillas. Looks at historical research that shows they can use simple tools and even be trained to communicate in sign language. Also investigates newer research that looks at planned use of weapons, math ability, creative problem solving, reasoning, cooperation, imitation, social emotions, and other aspects of intelligence. Asks what forms the crucial differences in intellect between apes and humans.

Originally broadcast on television as a NOVA/National Geographic special on Feb. 19, 2008 ; "What separates apes from humans."

1 videodisc, teacher's guide (in pdf) ; Features: Printable materials for educators, secene selection, access to the Nova Web site, Described video for the visually impaired