The perpetual problem with Malthusian predictions of doom & gloom regarding food is that they always fail to take adaptations into account. We already grow enough food to feed 16 billion people; the problem is that in the West we squander it and in the rest of the world, supply chains leave it to spoil before it reaches markets. These are not insurmountable problems. The next issue is climate change: this will definitely alter where food can be grown and what kinds of food can be grown, but again adaptations are more than possible. Millet should replace rice, for example. But where some land is lost to climate change, other land will become suitable. As for fertilizers, although silly ignorant middle-class people love to squeal loudly about GMO crops, this self-indulgent First World nonsense will evaporate the moment any actual shortages begin to become evident. And as GMO crops become more sophisticated in their ability to withstand more arid conditions and require less fertilizer, we will not experience the shortages the author imagines. In fact, when we look at the last 150 years of data we see clearly that every famine is caused by one factor: government incompetence and/or intentional malice. So yes, there will be famines and shortages in future, but they won't be the result of the factors listed in this article. They will be due to plain old ineradicable human stupidity.