I think we should make energy consuming more efficient. The more efficient the cars, industrial system, and 3C product become; the less carbon dioxide will be emitted. Substantial energy efficiency improvement can be realized by replacing individual devices. In the long run, even larger savings may be possible through structural changes, such as being able to work closer to home or redesigning the houses or the city.

　　Nowadays, many constructers in developing country cut the trees in their forest to build the houses. They even didn't notice that what they have done could cause lot of damage to the earth. Trees, as we know, can break down CO2. Therefore, we should not cut them off. Instead, we should plant more plants on the earth.

　　Oil is the fuel that most of people use to turn on engines or a machine. However, burning fossil fuels may cause more emissions into the air, and then global warming will getting worse. To protect our land, we should research in the alternative energy such as wind, hydrogen, or solar. By using these powers, less CO2 will be emitted.

　　Currently, governments keep promoting bicycle riding since this activity can not only reduce the contamination but also make people healthy.

　　There are many vegetarians around the world. Research shows that eating vegetables and fruit are better than consuming meat. Farmers keep pigs and cows. However, in the process of breeding them can cause a great deal of emissions such as methane and carbon dioxide. Furthermore, the process of transporting the meat may also cause pollution, which will accelerate the global warming. Thus, we should promote vegetable eating instead of meats. It can benefit us as the fiber will help us digest and of course, it's friendlier for the health.

　　When we shop, clerks tend to use plastic bag to pack things. Plastic is undegradable, so once we throw it, it may cause terrible pollution. To protect the environment, we should our own bag when we go to shop, in that case we can control and lower the usage of plastic bags.

　　In conclusion, we need to strain our brain to come up with more creative and eco-friendly ideas as soon as possible. Not only the global warming, but many natural phenomena indicate that the earth is finally getting angry, after thousands of years with endurance and forgiveness. Don't care about the lose when you make a revolution for green technology anymore!! The more you care, the most we will lose.