The BBC ran a story entitled “Shifting Sands,” which describes towns in the Nigerian Sahel that are being swallowed up by the Sahara desert which is marching southwards.

The presumption is this: Global warming is causing desertification, and the villages of northern Nigeria are among the victims. But this is almost certainly false. Desertification is being caused by two factors stronger than global warming - it is being caused by deforestation, and it is being caused by drought.

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