The green shoots of recovery are showing up on satellite images of regions including the Sahel, a semi-desert zone bordering the Sahara to the south that stretches some 2,400 miles (3,860 kilometers).

Images taken between 1982 and 2002 revealed extensive regreening throughout the Sahel, according to a new study in the journal Biogeosciences.

The study suggests huge increases in vegetation in areas including central Chad and western Sudan.
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“The nomads [in the Western Sahara] told me there was never as much rainfall as in the past few years,” Krpelin said. “They have never seen so much grazing land.”

“Before, there was not a single scorpion, not a single blade of grass,” he said.

“Now you have people grazing their camels in areas which may not have been used for hundreds or even thousands of years. You see birds, ostriches, gazelles coming back, even sorts of amphibians coming back,” he said.

“The trend has continued for more than 20 years. It is indisputable.”