African countries are building a “Great Green Wall” to beat back the Sahara desert

African countries are building a “Great Green Wall” to beat back the Sahara desert,
By Omar Mohammed,
Quartz.com,

"Eleven African countries are moving ahead with an ambitious pan-African effort in the Sahel-Saharan region of the continent to protect arable land from the encroaching Sahara desert-by planting trees."

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