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TechZone ► https://goo.gl/Gj3wZs
According to the calculations of scientists, the main deficit of the 21st century will not be oil or some mineral, but simple fresh water. According to the UN, about 70 percent of water is spent on irrigation, especially during droughts. Humankind is inventing more and more new methods to solve this problem, and some of them are so amazing that they can even be called strange. Do you want to see how droughts are being fought around the world?