The Tapanuli orangutan has been identified as the newest species of great ape, but also likely the most endangered. 

Scientists think these apes switch to breastfeeding during periods of food scarcity.

Captive ape produces more than 500 vowel-like sounds, offering clues to how speech evolved in humans.

A round-up of recent discoveries in behavior research

A round-up of recent discoveries in behavior research

A study shows that different populations of the Southeast Asian ape display and transmit specific behaviors through generations in a way similar to human cultures.