On a 5000 mile run through South America you get intimately acquainted with all kinds of nature. We have taken to sleeping in the forest under-storey. But, as more and more of it is cut down or lost to grazing land, the future of this natural haven is under threat.
Drought in the Sahel region of West Africa is fast becoming a humanitarian crisis; Henry Makiwa travels to Burkina Faso to see how the lack of rain and an influx of refugees have affected the country.
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