If there are more people in the world, and there must have more food to feed these people. But food is already problem in today's world. A third of the world's population is starving because there is not enough food. Ten thousand people dying of hunger every day in some parts of the world. And in others parts of the world, people become ill and die because they drink too much food, and they are fat. Some countries have not food, but others have too much, and they throw them away. How can tomorrow's world feed its people?