Today, one-quarter of the world’s population still lives on the equivalent of less than one US dollar a day, and the World Bank says that the daily spending power of 1.2 billion people is roughly equal to the price of a hamburger, two soft drinks, or three candy bars in the West. According to the UN Food and Agriculture Organization, 815 million people, including 200 million children under the age of five, go to bed hungry each night.