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Ed Webb

See where water is scarcest in the world - and why we need to conserve - Washington Post - 1 views

www.washingtonpost.com/...water-scarcity-map-solutions

water climate development economy SDGs agriculture

shared by Ed Webb on 16 Aug 23 - No Cached
  • An analysis of newly released data from the World Resources Institute (WRI) shows that by 2050 an additional billion people will be living in arid areas and regions with high water stress, where at least 40 percent of the renewable water supply is consumed each year. Two-fifths of the world’s population — 3.3 billion people in total — currently live in such areas.
  • the Middle East and North Africa regions have the highest level of water stress in the world. Climate change is shifting traditional precipitation patterns, making the regions drier and reducing their already scarce water supplies. Population growth and industrial use of water are expected to increase demand.
  • The WRI analysis accounts for surface water, but not groundwater stores that are tapped when lakes, rivers and reservoirs run dry. This means the new estimates may underestimate risk. Many rural areas use groundwater for drinking water and farmers worldwide rely on it for irrigation. But groundwater often replenishes much more slowly than surface water.
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  • Only half of 1 percent of the world’s water supply is fresh water in liquid form. The rest is saltwater or frozen into glaciers.
  • its biggest use, globally, is for food production
  • “It’s much more useful and easier to live with if the water all comes regularly and without these extremes. But more and more, that’s not the case.”
  • If surface water is in short supply, people often turn to groundwater, which can be rapidly depleted. In India, nearly 60 percent of the population makes a living from farming. For decades, the government supported farmers by subsidizing the cost of diesel to run water pumps and tractors and by purchasing wheat and rice at an artificially high price. Water demand to irrigate rice and wheat fields is contributing to groundwater depletion in the northern region of Punjab.
  • “More people demand more water, but also each person demands more water as they get wealthier,” Iceland said. “So as you get wealthier, you move from a more grain and vegetable-oriented diet to a more meat-oriented diet.”
  • Growing and feeding a cow to create one pound of beef requires as much as 1,800 gallons of water, by some estimates. Calorie-for-calorie, that’s almost eight times as much water as vegetables and 20 times as much water as cereals like wheat and corn.
  • Water-intensive crops like sugar cane and cotton could also drive demand in sub-Saharan Africa, where water use is expected to double over the next 20 years. Many areas still lack infrastructure to reliably deliver water for irrigation. As those pipelines are built, more farmers will have access to water, which will further strain surface water supplies. Inefficient water use and unsustainable management could lower gross domestic product in the region by 6 percent, according to WRI.
  • One Saudi company is growing alfalfa in the Arizona desert, pulling from the area’s groundwater supplies. That alfalfa is then shipped overseas to feed cattle in Saudi Arabia, where industrial-scale farming of forage crops has been banned to conserve the nation’s water.
  • Water is also integral to mining lithium and other minerals used in electric vehicle batteries and renewable energy infrastructure. These critical minerals are often found in arid places like Chile, which is already water-stressed and is projected to use 20 percent more water by 2050, according to WRI.
  • Since farming accounts for the most water use globally, experts say that micro-sprinklers and drip irrigation instead of flood irrigation are an important solution.
  • reducing meat and dairy consumption can decrease individual water footprints. Reducing food waste could also help reduce water use. In the United States, more than a third of food ends up in the landfill. The biggest single contributor to food waste is throwing away food at home.
Ed Webb

How war destroyed Gaza's neighbourhoods - visual investigation | Gaza | The Guardian - 0 views

www.theguardian.com/...bourhoods-visual-investigation

israelpalestine Gaza Palestine Israel IDF violence war conflict destruction analysis

shared by Ed Webb on 30 Jan 24 - No Cached
  • Using satellite imagery and open-source evidence, the investigation found damage to more than 250 residential buildings, 17 schools and universities, 16 mosques, three hospitals, three cemeteries and 150 agricultural greenhouses.Entire buildings have been levelled, fields flattened and places of worship wiped off the map in the course of Israel’s war against Hamas in Gaza, launched after the Hamas attack on Israel on 7 October.The destruction has not only forced 1.9 million people to leave their homes but also made it impossible for many to return. This has led some experts to describe what is happening in Gaza as “domicide”, defined as the widespread, deliberate destruction of the home to make it uninhabitable, preventing the return of displaced people. The concept is not recognised in law.
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