Why Africa Needs A (Green) Wall
Africa has ambitious plans to build a 8,000 km long wall of vegetation across the the Sahara desert. It’s hoped that the 15 km (9.3 mile) wide wall will prevent further desertification of the Sahel, a region home to over 135 million people. This video discusses the wall’s inception, progress to date, and chances of success. We also briefly discuss similar desert push-back schemes.