There is the Great Green Wall project. But I doubt this is still going strong. https://en.m.wikipedia.org/wiki/Great_Green_Wall_(Africa) https://en.m.wikipedia

There is the Great Green Wall project. But I doubt this is still going strong. https://en.m.wikipedia.org/wiki/Great_Green_Wall_(Africa) https://en.m.wikipedia.org/wiki/Great_Green_Wall_(Africa) There are also companies like Groasis that try to make it possible to grow trees in very dry land by using moisture from the air. https://www.groasis.com/en https://www.groasis.com/en