Currently there have been many problems in the world with oil, pollution, overpopulation, and many more problems. Many people can stop some of these problems by using hybrid cars or just not driving for a while. If we don’t buy gas for a few days I guarantee that the price of gas will go down dramatically. If people stop littering then we will take away a lot of damage that has to do with pollution. They should make a machine that if you throw your trash away you will get money that way people would be happy to throw there trash away. Obesity is a very serious problem in the world. We should make special foods that will help obese people to enjoy there food while eat as much as they want while they lose weight. I think if people try to change the world they can do it just with a little bit of work.