Nothing gives better proof of a sure and certain, rapidly growing global food shortage than the simplest look at how commodity markets have been responding to the US debt crisis, the coming devaluation of the US dollar, and the merited exposure of Barack Obama as a loser. Stripping away the short covering, the dollar crisis, inflation fear and all the rest, we find that food prices are resisting a lot better than oil prices, to the rising likelihood of recession in the western world, and maybe also global economic recession. If food products were "pure commodities", like oil basically is,...