What Makes Us Human?
Recent brain imaging research is offering new insights.

The Ape That Teaches
Why is our ability to teach so critical and so complicated? MIT's Rebecca Saxe explains.

Kanzi the Bonobo
In this audio slide show, researcher Sue Savage-Rumbaugh describes one extraordinarily linguistic ape.

Our Family Tree
See (and hear) where you stand among the great apes in this audiovisual interactive.

Video Extras
Clever bonobo, dim-witted chimp? You decide.