Global warming

The global warming is the most serious problem in the world.
However, Korean don't realize that seriously.
They are worried about it, but they still use air conditioner and use fossil fuels which make much carbon dioxide, CFCs, and other pollutants, finally increasing the world's average temperature. They, we are very selfish.
The global warming resulted in melting glacier, increasing sea level, changing rainfall, causing clmate changes and making many animals extinct by changing their places. It is an important problem we should solve. Then, how could we protect our earth from getting hotter?

If we stop the global warming, we have to do step by step. Firstly we have to grow many trees, seperate collection and spend less air conditioner. Also we have to walk short distance and don't throw litter.
However, actually I don't think that Korean including all of the people in the world will be able to stop global warming. They are already familiar with their life style and the issues of global warming, they don't care about it. The only thing we must do now is to be concerned about it.