This is a article quoted from ebs english book.

Looming Water Shortage
Global warming contributes to water scarcity.It makes hot and dry area hotter and drier,causing increased desertification. At the same time,it melts inland glaciers that feed water to 40 percent of the Earth’s population. In fact, there may be a day in the future when nations without enough water may have to have water shipped from other parts of the world.Since more fuel will be burnt to transfort water like this, global warming is only going to get worse.The same problem is there with desalinization.It takes huge amounts of energy to turn seawater into potable water,which means burning more fossil fuel.On the bright side,there are several promising solar and wind power options for the desalinization process.(A few day ago I was heard that news related to this topic.
An announcer report that at 2080 there are will no animals and plants except for human,  because of scarcity of water. When I was heard that news I can’t believe that .If such phenomenon occured in the future ,our offspring may bring about a war to get a water.This surmise come from an experts of all over the world.)