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Jamie Robertson looks at how the water management industry is facing up to the challenge of a water-poor world. Ian Elkins from industry magazine Global Water Intelligence explains the scenario the sector faces, while Chris Spain from water technology company Hydro Point Data Systems outlines one of the technologies being used.
Plus we meet a Virginia tobacco farmer making a new living out of the US's new craving for hummus.
Picture: A water tap, Credit: Joe Raedle/Getty Images
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