Extracts from a paper (Timilsina G R. Beghin J C van der Mensbrugghe D and Mevel S (2010) 'The impacts of biofuel targets on land-use change and food supply : a global CGE assessment' Policy Research Working Paper, World Bank, Washington DC.) state: "This study analyzes the long-term impacts of large-scale expansion of biofuels on land-use change, food supply and prices, and the overall economy in various countries or regions using a global computable general equilibrium model, augmented by a land-use module and detailed representation of biofuel sectors.

According to an article published in January 2011 in Nature News the world will be able to feed the predicted 2050 population of nine billion people. This is according to two French agricultural research organizations who have published the French Foresight report: Agrimonde. 'Scenarios and Challenges for Feeding the World in 2050'. The joint report lays out findings gleaned from 2006 to 2008 that could overturn some current assumptions about the state of global farming. More infomation is available here.

The Worldwatch Institute has published its latest report: 'State of the World 2011: Innovations that Nourish the Planet'. The press release states that the report

This should get you out into the garden.  If you don’t want to get your hands dirty, you can buy a half dozen chocolate coated ants or worms at Fortnum and Mason’s for a mere £7.