ABSTRACT
We are in a new age beyond the 20th century, which was the age of high-consumption society maintained by a mass supply of fossil fuels and advances in science and technology. But our activities in such a society will have a serious impact on us, such as in energy security, global environmental issues, population problems, etc. Therefore, it is necessary to reconstruct a new society with new values and new lifestyles in order to sustain our world from now on. Finding solutions for energy and environmental issues is essential for realizing a sustainable world, since it will take a long time to develop energy technologies and to recover from the destruction of the global environment.
