During the long space journey, astronauts are able to carry limited drinking water. How can they make the best use of water energy? The answer is the reuse of water cycling system. For human beings who might live on Mars or the Moon in the future, techniques for saving and exploring water resource are as important. Those people need to explore local water resource. On the Moon, we can take advantage of hydrogen and oxygen to compose water; on Mars, we can use the scarce underground water or heating the atmosphere to melt the ice on the capes.

Today we are facing the serious problems of green house warming. Rain forests are disappearing and the land of deserts are spreading out. The whole ecosystem is being destroyed. In order to save the environmental crisis and allow our next generation and generation to come to live on this beautiful planet, we need to apply space detecting technology to explore and save water resource on the earth.

First of all, each household should apply the water saving technique and be provided with the function of reuse of water cycling function. Although on the earth's surface, 70% are oceans, yet global climate changes caused by green house effect have already made some places with floods and some with small amount of rain. As a result, we need to save water and prepare for the need. With the water saving technology, we are able to reduce the use of water by 1/3-1/2.

In addition, for those areas with extensive deserts, we can divert water from nearby river or ocean to make artificial lakes, grow tropic plants, or build housing units for desert area. We also can take the advantage of Moon City technology to shield away ultraviolet rays to avoid sun damage to people living in the deserts. These concepts are part of "Green Desert Plan."