The Green Revolution was a one-time technology transfer. We didn't hold further advances in reserve which could spur another radical increase in worldwide food

The Green Revolution was a one-time technology transfer. We didn't hold further advances in reserve which could spur another radical increase in worldwide food production, nor do we have an ever-expanding supply of petroleum-based fertilizers. Those articles assert that the free market will somehow provide enough food to meet any demand, but unless there's immediate and unprecedented progress in both cold fusion and nanotechnology, I don't see how we can expect that to happen.