There is a food pricing crisis, but that isn't the same as a shortage. I elaborate on Grist.
In short, I conclude that the wider the separation of rich and poor, the less effective market mechanisms are in providing useful incentives and the more necessary complex regulatory systems become.
The market libertarians want it both ways: minimal regulation and no worry about wealth stratification, but recent events in the global food market indicate that you can't have both and a viable planet too.
Comments disallowed here so I don't have to track two threads. Do comment on the Grist site, please and thanks.