Secretary-General Ban Ki-moon is warning that by 2030 nearly half the world's population could be facing a scarcity of water, with demand outstripping supply by 40 percent.
Ban said one in three people already live in a country with moderate to high water stress. He said "competition is growing among farmers and herders; industry and agriculture; town and country; upstream and downstream; and across borders. Let us use it more intelligently and waste less so all get a fair share," Ban said urging international cooperation at protect water resources. (AP)