A farmer prepares water channels in his maize field in Ngiresi near the Tanzanian town of Arusha on Tuesday, July 17, 2007. Millions of farmers around the world will be affected by a growing movement to change one of the biggest forces shaping the complex global food market: subsidies. Many experts agree farmers need help to grow food year in and year out, but Western farmers may get too much and African farmers too little. (AP Photo/Karel Prinsloo)
