Biological anthropologist Cheryl Knott and photojournalist Tim Laman have dedicated their lives to the orangutans of Borneo’s Gunung Palung National Park. Together with their children ...

Tempted by the fruit of a strangler fig, a Bornean orangutan climbs 100 feet into the canopy. With males weighing as much as 200 pounds, orangutans are the world’s largest tree-dwelling animals.

Bornean orangutan Kyle climbs a web made of recycled fire hose in the Great Ape House’s outdoor habitat. Connor Mallon, Smithsonian’s National Zoo and Conservation Biology Institute.

Orangutans are the only great apes in Asia, making their homes on the islands of Borneo and Sumatra in the Malay archipelago. Orangutans are arboreal, meaning they primarily live in the trees.

This is the Borneo Orangutan Survival Foundation, where orphaned baby apes are cared for by their very own nannies. Abandoned youngsters are brought into the centre in Kalimantan, Borneo ...

Ten years ago, I set off for Borneo to study orangutans. I knew how closely related they were to humans, but when I actually experienced the orangutans first hand, I found the similarities ...