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The rainforest is the natural habitat of the orangutan and is under threat from Indonesia's massive - and growing - palm oil industry.
A young orangutan named JoJo lies sedated after being rescued on a plantation before being taken to an animal refuge in Katapa. Young animals are often orphaned as loggers involved in rainforest clearance shoot adult orangutans they consider a pest.
The Indonesian Ministry of Forestry has recognised the problem and it is working with local charities who are trying to re-home the surviving orangutans.
Young orangutans are often left traumatised by their experiences. It is hoped within time the animals can be taught how to survive and eventually released back into the wild.
In the last two decades nearly 40% of the orangutans' natural habitat in Kalimantan has been destroyed. The species is now endangered.
It is illegal in Indonesia to develop land that consists of peat to a depth of three metres or more due to the release of methane. Panorama's Raphael Rowe found evidence of illegal development.
Hundreds of square miles of the Indonesian rainforests of Borneo have been cleared to allow for the planting of palm oil fruit.
Indonesia is the world’s third largest emitter of greenhouse gases, trailing only America and China.
Palm oil earns Indonesia almost £5bn a year and is the country's third largest export earner. It supplies not just the food industry but the bio-fuel boom as well.
Only 3% of the world's palm oil output is currently certified as sustainable. Man continues to be the greatest threat to the Indonesian orangutan.
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