It's in everything from crisps and toothpaste to chocolate and shampoo, palm oil is a commodity everyone's fighting for - and Papua New Guinea has found itself on the front line. (Subscribe: https://bit.ly/C4_News_Subscribe)
The country's rainforests - crucial to the battle against harmful carbon emissions - are being razed down at an alarming rate to make way for palm oil plantations.
And now - global brands are being linked to shocking human rights abuses in a two year investigation by Global Witness, which they've shared with this programme.
Undercover recordings reveal palm oil executives apparently admitting to brutal crimes. Our Chief Correspondent Alex Thomson has this exclusive report.
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