In August 2010 I made a film in Mexico with the Ecologist about how unregulated food speculation on the international derivates markets is pushing up the cost of staple food in some of the world’s poorest countries. In developed countries the cost of food accounts for around 10-20% of household income, whereas in developing countries it’s between 50-90%. So it’s easy to see why any increase in the cost of food has a devastating effect on people’s lives. But higher food prices don’t just bring the threat of malnutrition. Spending more money on food means less on clothing, education, housing and transportation – severely disrupting the development prospects of many countries around the word.