This has been developing for some time now - landlords in several countries have been pushing tenant subsistance farmers off land to use it for cash crops, paying for labour only a few months of the year.

What is really required is that the bio fuels are an extra either made from the waste of a food crop, or that marginal lands unable to sustain any sort of life are worked on and used for bio fuel crops - so that there is a net gain in arable land over time as the value of the crop makes it worthwhile bringing in clean water, doing what it takes to get the soil fertile, even fighting the deserts where they are expanding.

People are already starving, yet my local supermarket can afford to import food and then trash it if it stays on the shelves too long because people here can't afford to buy it all. Supermarkets don't care about anything but profit, they don't have to, food is just incidental in the moving of money from the general public's pocket to their tills.

Food is actually still quite cheap to aquire in bulk, it is all the moving, processing, packaging and storage which costs, and that means that the people who are tending and harvesting what used to be exotic foods for export can't afford to feed themselves on their basic diet, and there isn't enough to go around anyway.   

It's not as though no one knows what the IMF has done to the fragile economies of various nations - the rules they have imposed have been death sentences to some of the poorest workers there used to be.

The sad thing is that the IMF regards their work as improving things generally, when it is often raising standards of living in one area by devastating the lives of those working in another.