Food for thought

Between March 2010 and March 2011 the cost of maize and wheat doubled. This is just the latest in a series of price hikes in food staples. In an editorial this week, Joachim Von Braun sets out some of the problems that this price rise is going to cause. David Nabarro, UN special representative of the secretary-general on food security and nutrition, describes why and how we should control the price rise.