In the lastseveral decades, our earth has been extremely polluted, such as air pollution,water pollution, noise pollution and so on. In recent years, the extremeweather becomes more and more frequent. Winter gets colder and summer becomeshotter and it rains more frequently. All of these warn us that protecting theenvironment is a serious and emergent event. As our general people, we shouldbuild proper lifestyle. We should pay attention to water and light saving. Whenwe go out, we should firstly choose the public transportation. The most importantis that we must realize that we can do a lot of things to protect ourenvironment. It's our duty to make our home better. Let’s change from ourselves.