After the Great Wall of China, Africa is building an 8,000-km 'Wall of Trees' to fight climate change, restore land and feed millions

Stretching from the Atlantic coast of Senegal to the shores of Djibouti on the Red Sea, Africa is undertaking one of the most ambitious environmental projects ever attempted. Known as the Great Green Wall, the initiative spans around 8,000 kilometres across the Sahel, a vast semi-arid region bordering the Sahara Desert.

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