To understand the complexities of the international food market--and how traders in Chicago can cause Africans to starve--you could get a ph.D. in economics, or read a 400-page report from the World Bank. Or you watch this superb nine minute video, directed by Denis van Waerebeke . Though ostensibly created for a science show in Paris for 12 year olds, it's actually probably waaaay over a kid's head. Just watch--it's excellent, and very well illustrated: The video begins with a basic question: How is it that the first world has an oversupply of food, while 1 in 7 in the world go malnourished? Basically, farmers in developing countries have eschewed growing local food crops in favor of growing things like cotton for international export.