In Saving Water: From Field to Fork – Curbing Losses and Wastage in the Food Chain, a policy brief by the Stockholm International Water Institute (SIWI), the Food and Agriculture Organisation (FAO) and the International Water Management Institute (IWMI), projected food and cereal demand could double by 2050, and the world would need 10,000 to 13,500 km3/year of water supply to keep up with production requirements.

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Source: http://www.irinnews.org/Report.aspx?ReportId=80078

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