Spot on analysis regarding alternative energy:
"While it's possible to invest enough in alternative energy to keep some infrastructure working, globally, total alternative energy is a scant few percentage points of total energy consumption."
They gloss over the shale sources of energy.
The health crisis, is speculation; but I assume they are correct on existing diabetes cases in China and India. Excess of rice eating, not starvation.
Fresh water will be the oil of the future. He who controls the water, controls the world.