October 16 is World Food Day. The UN started the day in 1979. It is used to remind people not to waste food and to ask people to fight hunger.A big member of people in the world still don’t have enough to eat. Food shortage(匮乏)is a big problem in the world. Right now, there are more than 1000 million hungry people in the world according to the UN. Many children go to sleep with hunger,