climate change flection

24% of the Earth's land is degrading, some of it formerly quite productive. This is the first accurate satellite based quantification of land degradation. Prior to this it was assumed to be limited to 15%. Land degradation -- the decline in the quality of soil, water and vegetation. Climate change also can influence the soil. For example, when the whether is big sun. The water in the soil will be evaporated but the salt dissolve in the water can't bring up to the air and stay at the ground. The vegetation might be died and poisonous when it keep absorb salt. The same situation happened on Mesopotamia and cause the civilization collapse. So we need to think the way and try to avoid the climate change quickly. Otherwise most of current civilization will been collapsed and people will also died by hungry, social disorder, warfare......