An indian farmer takes out water in a mud pitcher from a temporary pond to irrigate his cucumber farms ,on World Water Day, in the outskirts of Allahabad on march 22,2017. One in four of the world's children will be living in areas with extremely limited water resources by 2040 as a result of climate change , The UN has warned . within two decades ,600 million children will be in region enduring extreme water stress, with a great deal of competition for the available supply. The poorest and most advantaged will suffer most ,according to the research published by the children agency,unicef to mark World Water Day ,on Wednesday. (Photo by Ritesh Shukla/NurPhoto via Getty Images)
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