I think the key is the lack of water. In the Sahara and the Middle East, which are sunny and warm, if you add water plants grow fast. We can imagine future sc

I think the key is the lack of water. In the Sahara and the Middle East, which are sunny and warm, if you add water plants grow fast. We can imagine future scenarios in which fusion or solar are used to power large-scale desalination and irrigation to represent deserts from the coasts.