Why is Africa building a Great Green Wall BBC News

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=4xls7K_xFBQ

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. • Please subscribe HERE http://bit.ly/1rbfUog • World In Pictures • World in pictures | BBC News • Big Hitters • Playlist • Just Good News • Positive stories | BBC News

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