Talk Africa: Africa's Growing Deserts

As deserts across the world expand, around 1.2 billion people are at risk from desertification - and according to the United Nations, Africa is worst affected. It's estimated that deserts in parts of the continent are expanding at a rate of 5 km per year, and with 65% of arable land already damaged,Africa is facing a crisis that will affect both its food supply and its population.
And so, as global leaders gather in Marrakech at Cop22 to discuss ways to combat changing global weather, what steps will be taken to combat land degradation on the continent? And what can be done to mitigate the effects of Africa's growing deserts?
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