View full lesson: http://ed.ted.com/lessons/how-smart-are-orangutans-lu-gao Along with humans, orangutans belong to the Hominidae family tree, which stretches back 14 million years. But it’s not just their striking red hair that makes orangutans unique among our great ape cousins. Lu Gao shares some amazing facts about these incredibly intelligent great apes from Asia. Lesson by Lu Gao, animation by Anton Bogaty.