Water. Image: wikimedia commons.
Will 2015, culmination of United Nations’ Water for Life, fulfill its mission? Global demand for potable water will increase two-thirds by 2025. Singapore began design of a new water system in 1960; today, 30% comes from desalination, recycling of wastewater, and rain collection. But success rates can change. Las Vegas had plenty of water before the Hoover Dam brought bright lights to what became a big city; now drought is a problem. Worldwide, potable water underground may be threatened by hydraulic fracturing. Will the “sleeping giant” of what may be the most ancient water on earth, perhaps 2.5 billion years old, recently discovered in Canada, yield hope? According to Professor Barbara Sherwood Lollar, University of Toronto, the source contains more water than all the world’s rivers, swamps, and lakes combined.
For more: http://www.un.org/waterforlifedecade/index.shtml
“The contribution of the Precambrian continental lithosphere to global H2 production,” Barbara Sherwood Lollar, T.C. Onstott, G. Lacrampe-Couloume, and C.J. Ballentine. Nature 516, 379-382 (18 December 2014) doi:10.1038/nature14017.
“Volume of world’s oldest water estimated,” Rebecca Morelle, BBC News, Science and Environment. December 17, 2014.
“Drought: A Creeping Disaster,” Alex Prud’homme. The New York Times, July 16, 2011. http://www.nytimes.com/2011/07/17/opinion/sunday/17drought.html?_r=0
Building the World Blog by Kathleen Lusk Brooke and Zoe G Quinn is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.