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Water everywhere, nor a drop to drink? Need not be

I answered a quiz about famine in horn of Africa.  In east Africa the rainy season has failed for two successive years and has caused the worst drought since 1950s.

My small brain started thinking, why can't our scientists who have managed to create so many miracles, find a way of desalination of sea water, and economically. So far all the commercial desalination plants are too expensive and consume lot of energy.
It is very important and urgent to develop this technology, not for Somalis or Africans, but we Indians. How long will our ground water and rivers can sustain our growth. Or else a day will come when we may get water in rations, 3 cans per family per month, pay 4 times more for subsequent cans.

You may want to read


             Famine-in-horn-of-africa
             Sun-Assisted Desalination

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