Africa’s ‘Great Green Wall’ could have far-reaching climate effects
A massive line of vegetation in the Sahel may intensify the West African monsoon, simulations show
![photo of the Sahel landscape in Mali](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/12/122121_cg_greening-sahara_feat.jpg?fit=1030%2C580&ssl=1)
The southern edge of the Sahara is bordered by a semiarid zone called the Sahel (shown here in Mali). The “Great Green Wall” project aims to stop desertification by planting a massive line of trees in the Sahel. Those trees, new research shows, could also have a powerful effect on the region’s climate.
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