If you spend enough time on the “educational” side of Youtube, you will come across short documentaries that talk about projects aimed at stopping desertification and climate change. One example is the green wall of trees, that multiple sub-saharan countries want to plant in order to stop the sahara from spreading. Another example are the plans to turn parts of the australian outback in to humid land by planting trees and building dams. My question is: Is there even enough fresh water to sustain all of those projects? Could you theoretically turn all deserts into humid forests?
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Nope and even if it was it probably wouldn’t be a good idea. China’s great green wall may actually be making the situation worse. https://youtu.be/VTUTJ1vuhcQ
The Amazon rainforest relies upon the Bodele depression which is near lake Chad at the southern end of the Sahara https://youtu.be/Ggeu_M7HRR4
One useful thing is the use of “magic stones” or stone lines to prevent the loss of topsoil https://youtu.be/gW8GE4ilJhk
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