I do agree with you that severe food shortages are likely, but not for the reason you’ve given. The planet’s biggest problem is overpopulation – and it is the primary cause of deforestation, acid rain, oceanic dead spots, species die-offs, hunger, water shortages, energy shortages, pollution, war, epidemic, ozone hole expansion and a dozen other calamities, real and supposed, including climate change. Overpopulation WILL lead to food shortages even if no other problems manifest themselves. IMO, our dependence on petroleum-derived fertilizers is not sustainable. If Peak Oil proves to be real, most of us are going to starve.
