By 2050, the demand for water to sustain world agriculture will increase by seventy-five per cent in order to feed an estimated nine billion inhabitantsAquifer Systems Management: Darcy’s Legacy In A World Of Impending Water Shortage: Selected Papers On Hydrogeology 10 available on April 23 2018 from VitalSource for itemprop="offers" target="_external" title="" itemscope itemtype="http://schema.org/Offer">88.2