Jeremy Grantham of GMO has recently published a depressing outlook for the future of humanity on planet earth. Why does he believe that our days are numbered? Grantham believes that the population on Earth has finally outgrown the earth’s ability to support.
He believes that Earth can only sustainably support roughly 1.5 billion people- currently there are 7 billion people on the planet, and we are only growing. Why does he believe that the planet cannot support our population?
Partly because there is a finite supply of a critical mineral needed to grow food: Phosphorus. It is a critical ingredient in fertilizers that we only have so much of. Grantham believes that we will hit “peak phosphorus” production within a few decades. After that it is all downhill until we run out entirely.
If this is true, then we may very well not be able to support life by supplying food the way we do now. Of course, there are sure to be other options.
Scientists are making new discoveries every week and there are talks of farming on Mars to help support our ever-growing population. We are human beings- we’ll figure out a way.
Paul Hudson | Elite.