Ten days before the COP26 climate change conference in Glasgow, the leaders of Brazil and Colombia have promised to work together to protect the Amazon from deforestation and cattle farming, while Western governments have pledged billions of pounds to help. (Subscribe: https://bit.ly/C4_News_Subscribe)

In Colombia, the British government alone is spending almost a quarter of a billion pounds. But are these efforts working?

We travelled to Colombia's Chiribiquete National Park, the largest tropical rainforest park in the world, to find out.

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