INTERNATIONAL NEWS - More than 100,000 Critically Endangered orangutans have been killed in Borneo since 1999, research has revealed.
Scientists who carried out a 16-year survey on the island described the figure as "mind-boggling".
Deforestation, driven by logging, oil palm, mining and paper mills, continues to be the main culprit.
But the research, published in the journal Current Biology, also revealed that animals were "disappearing" from areas that remained forested.
This implied large numbers of orangutans were simply being slaughtered, said lead researcher Maria Voigt of the Max Planck Institute for Evolutionary Anthropology in Germany.