There is a very ambitious project in Africa that attempts to do the same: https://internationaltreefoundation.org/the-great-green-wall-for-the-sahara-and-the-s

There is a very ambitious project in Africa that attempts to do the same: https://internationaltreefoundation.org/the-great-green-wall-for-the-sahara-and-the-sahel/ https://internationaltreefoundation.org/the-great-green-wall...