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Why is Africa building a Great Green Wall? BBC News 
Added 5 months ago by hunor karamán
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Why is Africa building a Great Green Wall? BBC News 
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Eleven countries are planting a wall of trees from east to west across Africa, just under the southern edge of the Sahara desert. The goal is to fight the effects of climate change by reversing desertification. A film by Amelia Martyn-Hemphill for BBC World Hacks.
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