Compost Blanketing the Sahara

Last night, Daniel and I were talking about what might happen with Africa in this century.  It’s an interesting question, considering that Africa has an unusually young population, many unstable governments, metals that are hard to find anywhere else on Earth, significant presence of both Christian and Muslim fundamentalists, and very uneven distribution of resources.  All kinds of things could happen there!

Daniel had an idea that had never occurred to me before, which I think is fabulous!  We haven’t fully explored the science behind it (and we can see some potential pitfalls) but as an idea for what Earthlings could achieve if we tried, I think this is really inspiring.

The Sahara Desert covers almost as much land as the United States but is habitable to less than 1% as many people.  “Huge areas are wholly empty,” says the Encyclopedia Brittanica, but there is archaeological evidence that more people lived there in prehistoric times.  The Sahara has grown over the course of human history, partly because of climate change and partly because of unsustainable agricultural practices.  This is the region of Earth where human beings first developed agriculture.  This land fed people for thousands of years, but now it is used up, dried out, blowing away.

Is that just what happens?  Do we live in a place until we use it all up and then move on?  What will happen when we run out of places? Read more of this post