The world's largest desert is growing. In the last century, the Sahara Desert expanded by more than 10%, now covering an area of more than 3.3 million square miles (8.6 million square kilometers) and spanning 11 countries in North Africa.
원문출처 : https://www.cnn.com/2021/03/17/africa/africa-great-green-wall-sahara-desert-spc-intl-c2e/index.html
원문출처 : https://www.cnn.com/2021/03/17/africa/africa-great-green-wall-sahara-desert-spc-intl-c2e/index.html