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While the population of earth tripled in the 20th century, freshwater use grew by a factor of six. As the trend continues the problem will be exacerbated, leading to a greater number of people lacking access to drinking water and greater tensions between states over access to fresh water supplies. Analysts from Goldman Sachs have gone as far as to say that water will be the "petroleum for the next century.” So how do we solve this issue?
The answer could be staring us in the face. The ocean makes up 70 percent of the earth’s surface yet its high salt concentration renders it unsuitable for our drinking needs. This is where desalination comes in. Desalination refers to any of several processes that remove enough salt from sea water to make it suitable for animal consumption or irrigation, and if almost all the salt is removed, for human consumption.
Watch below to learn about the steps of the desalination process: