Today, it is estimated that 840 million people are severely undernourished, while in other countries obesity is reaching epidemic proportions, writes John Hepburn of Greenpeace International in an article on the website www.zmag.org that marks World Food Day. "Solving hunger is not merely a matter of producing enough food, but of distributing it to the people in need. People don't starve because there isn't enough food produced, but because they are poor and are denied access to it."