Human activities such as agriculture, logging, and urbanization are increasingly encroaching on the habitats of great apes.

Despite startling breakthroughs, the first words and signs of great apes are rarely publicly celebrated by scientists.

Seated on sandbags in South Africa's Sterkfontein caves, where one of our earliest ancestors was found, Itumeleng Molefe ...

Xiaomanyc taught himself ape communication and tested his knowledge with the bonobos at the Ape Initiative in Des Moines, Iowa.