FAO and OECD predict that for the next decade food prices will rise because of the growing use of crops like cereals and other commodities in order to feed the demand for biofuel industry. The impact on developing countries, for the urban poor, and farmers' livelihoods would be immense.
http://www.foodnavigator.com/news/ng.asp?id=78029-fao-biofuels-food-prices