I am a student of Sydney University. I am living in a small town called Hartwell with a population of around 5,000. It is one of the "Australia's Nicest Towns". But things were very different in the past. The local people used to bum wood to keep their houses warm in winter. That caused serious air pollution and a lot of trees were cut down. Laws were soon made to stop this and people were encouraged to use clean energy. I think we can do something similar in China. Perhaps we can start with using less oil. / believe we can make our world a better place if we keep trying.