Orangutan Mum and Babe

While Sumatra's Bukit Tigapuluh rainforest is prized as one of the biologically richest habitats on Earth, it is also one of the most threatened.

Nestled deep inside what is the last remaining lowland forest on the Indonesian island of Sumatra are thousands of plants and animals. Until recently, the green foliage was a safe haven for these species, including the critically endangered orangutan.

In May 2009, the Indonesian government granted new logging concessions to one of the world's largest paper companies, Asia Pulp & Paper. As a result, a massive logging operation is underway and deforestation has devastated what was once a flourishing habitat.

"If you look at the island of Sumatra, as much as 70 percent of the forest has been lost," Annette Cotter of Greenpeace told ABC News.

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