There is no shortage of food; it's just the prices that are food unaffordable.
Federal Reserve Ben Bernanke's "weak dollar" policy has ignited a wave of speculation in commodities which is pushing prices into the stratosphere. Foreign central banks and investors presently hold $6 trillion in dollars and dollar-backed assets, so when the dollar starts to slide, the pain radiates through entire economies.
And oil depletion, biofuel production, over-population, and giant agribusinesses adds to the problem. But the catalyst is the Fed's monetary policies; that's the domino that puts the others in motion.
Otto Spengler in his recent article in Asia Times, "The global food crisis is a monetary phenomenon, an unintended consequence of America's attempt to inflate its way out of a market failure. …Washington's economic misery now threatens to become a geopolitical catastrophe....The link between the declining parity of the US unit and the rising price of commodities, including oil as well as rice and other wares, is indisputable."
A field worker in Haiti who earns $2 a day, and spends all of that to feed his family, has to earn twice that amount or eat half as much. That's not a choice a parent wants to make.
[Excerpt of an article by Mike Whitney, ICH]