Skip to main content

NASA warning: World running out of water

Now here is something to be concerned about.   It's bad enough that many have predicted that we will in years to come see wars erupt as countries feud about the supply and accessibility to water, but now we have a dire warning, from no lesser authority than the NASA, that the world is headed toward running out of water.

"The world’s largest underground aquifers – a source of fresh water for hundreds of millions of people — are being depleted at alarming rates, according to new NASA satellite data that provides the most detailed picture yet of vital water reserves hidden under the Earth’s surface.

Twenty-one of the world’s 37 largest aquifers — in locations from India and China to the United States and France — have passed their sustainability tipping points, meaning more water was removed than replaced during the decade-long study period, researchers announced Tuesday. Thirteen aquifers declined at rates that put them into the most troubled category. The researchers said this indicated a long-term problem that’s likely to worsen as reliance on aquifers grows.

Scientists had long suspected that humans were taxing the world’s underground water supply, but the NASA data was the first detailed assessment to demonstrate that major aquifers were indeed struggling to keep pace with demands from agriculture, growing populations, and industries such as mining.

“The situation is quite critical,” said Jay Famiglietti, senior water scientist at NASA’s Jet Propulsion Laboratory in California and principal investigator of the University of California Irvine-led studies.

Underground aquifers supply 35 percent of the water used by humans worldwide. Demand is even greater in times of drought. Rain-starved California is currently tapping aquifers for 60 percent of its water use as its rivers and above-ground reservoirs dry up, a steep increase from the usual 40 percent. Some expect water from aquifers will account for virtually every drop of the state’s fresh water supply by year end.

The aquifers under the most stress are in poor, densely populated regions, such as northwest India, Pakistan and North Africa, where alternatives are limited and water shortages could quickly lead to instability.

The researchers used NASA’s GRACE satellites to take precise measurements of the world’s groundwater aquifers. The satellites detected subtle changes in the Earth’s gravitational pull, noting where the heavier weight of water exerted a greater pull on the orbiting spacecraft. Slight changes in aquifer water levels were charted over a decade, from 2003 to 2013."









Comments

Popular posts from this blog

Reading the Chilcot Inquiry Report more closely

Most commentary on the Chilcot Inquiry Report of and associated with the Iraq War, has been "lifted" from the Executive Summary.   The Intercept has actually gone and dug into the Report, with these revelations : "THE CHILCOT REPORT, the U.K.’s official inquiry into its participation in the Iraq War, has finally been released after seven years of investigation. Its executive summary certainly makes former Prime Minister Tony Blair, who led the British push for war, look terrible. According to the report, Blair made statements about Iraq’s nonexistent chemical, biological, and nuclear programs based on “what Mr. Blair believed” rather than the intelligence he had been given. The U.K. went to war despite the fact that “diplomatic options had not been exhausted.” Blair was warned by British intelligence that terrorism would “increase in the event of war, reflecting intensified anti-US/anti-Western sentiment in the Muslim world, including among Muslim communities in the

An unpalatable truth!

Quinoa has for the last years been the "new" food on the block for foodies. Known for its health properties, foodies the world over have taken to it. Many restaurants have added it to their menu. But, as this piece " Can vegans stomach the unpalatable truth about quinoa? " from The Guardian so clearly details, the cost to Bolivians and Peruvians - from where quinoa hails - has been substantial. "Not long ago, quinoa was just an obscure Peruvian grain you could only buy in wholefood shops. We struggled to pronounce it (it's keen-wa, not qui-no-a), yet it was feted by food lovers as a novel addition to the familiar ranks of couscous and rice. Dieticians clucked over quinoa approvingly because it ticked the low-fat box and fitted in with government healthy eating advice to "base your meals on starchy foods". Adventurous eaters liked its slightly bitter taste and the little white curls that formed around the grains. Vegans embraced quinoa as

Climate change: Well-organised hoax?

There are still some - all too sadly people with a voice who are listened to - who assert that climate change is a hoax. Try telling that to the people of Colorado who recently experienced horrendous bushfires, or the people of Croatia suffering with endless days of temps of 40 degrees (and not much less than 30 at night time) some 8-10 degrees above the norm. Bill McKibben, take up the issue of whether climate change is a hoax, on The Daily Beast : Please don’t sweat the 2,132 new high temperature marks in June—remember, climate change is a hoax. The first to figure this out was Oklahoma Senator James Inhofe, who in fact called it “the greatest hoax ever perpetrated on the American people,” apparently topping even the staged moon landing. But others have been catching on. Speaker of the House John Boehner pointed out that the idea that carbon dioxide is “harmful to the environment is almost comical.” The always cautious Mitt Romney scoffed at any damage too: “Scientists will fig