Demand for palm oil - a substance found in many everyday products - is threatening some of the world's most endangered species.
The rapid expansion of palm oil plantations in Indonesia has already led to the clearance of large tracts of rainforest, driving out animals like tigers, orangutans and Sumatran elephants.
Campaigners fear a new law may soon be passed which would open up another area the size of Yorkshire to the diggers.
ITV News' Science Editor Lawrence McGinty reports:
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