The southern fringes of the Sahara are dynamic. As rainfall varies, land patches on the edge chop and change between green and arid brown. Human activities, like overgrazing, deforestation or poor irrigation, further degrade some of the already arid parts of the Sahel, resulting in desertification. As the planet heats up, changes in rainfall patterns … Continue reading Progress is slow on Africa’s Great Green Wall, but some bright spots bloom