The 15 kilometer (9.3 mile) wide Great Green Wall project stretches over 7,775 km from Senegal on the Atlantic to Eritrea on the Red Sea. The aim was to curb the Sahara Desert's spread. But major challenges remain.
The change in climate and weather patterns is precipitating a rapid spread of the Sahara Desert, encroaching into lands and engulfing huge lakes, according to climate scientists.
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