Organizations at [World Water Week, a meeting of 2,500 scientists, politicians and officials from 140 countries who met to discuss global water issues] in Sweden said policy makers and businesses have to drastically improve harvesting methods on farms and minimize waste in food processing. Consumers also must be made aware of the implications of food waste, which consumes large amounts of water that could otherwise be beneficially used in a world that faces water shortages, a report said. ‘As much as half of the water used to grow food globally may be lost or wasted,’ said David Molden, director of research at the International Water Management Institute (IWMI) . …”
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Source: http://web.worldbank.org/WBSITE/EXTERNAL/NEWS/0,,d