We produce several times more than we need with the current climate, water and energy inputs. If the climate shifts with long term trends, and water becomes sca

We produce several times more than we need with the current climate, water and energy inputs. If the climate shifts with long term trends, and water becomes scarce under those trends, and the fossil fuel energy inputs cause long term CO2 release exacerbating/locking in the climate shifts - then it is a risk that the surplus food we generate today will not be as readily available in the future.