Water Availability

'The real threat to our future is peak water'

Author: 

Lester Brown
Kansas's Quivira National Wildlife Refuge in 2012, during the worst drought in the United States in more than 50 years. Photograph: Jim Reed/Corbis
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Peak oil has generated headlines in recent years, but the real threat to our future is peak water. There are substitutes for oil, but not for water. We can produce food without oil, but not without water.

We drink on average four litres of water per day, in one form or another, but the food we eat each day requires 2,000 litres of water to produce, or 500 times as much. Getting enough water to drink is relatively easy, but finding enough to produce the ever-growing quantities of grain the world consumes is another matter. ... Read more about 'The real threat to our future is peak water'

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Satellites Reveal Depletion of a Vital Middle East Water Supply

Author: 

Andrew C. Revkin
Satellites Reveal Depletion of a Vital Middle East Water Supply
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Just in case you needed more reasons to be concerned about the stability of the Middle East, new research using data from NASA’s gravity-sensing Grace satellites shows a substantial decline in the volume of groundwater reserves in the Tigris and Euphrates river basins. ... Read more about Satellites Reveal Depletion of a Vital Middle East Water Supply

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Ban Ki-moon: World on course to run out of water

Author: 

John Parnell
UN secretary general Ban Ki-moon said business as usual will mean demand for freshwater outstripping supply (Source: UN/Mark Garten)
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Speaking on the UN’s International Day of Biological Diversity, Ban said there was a “mutually reinforcing” relationship between biodiversity and water that should be harnessed.

“We live in an increasingly water insecure world where demand often outstrips supply and where water quality often fails to meet minimum standards. Under current trends, future demands for water will not be met,” Ban said. ... Read more about Ban Ki-moon: World on course to run out of water

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Water as vital to national security as defence - UN

Author: 

Alister Doyle
Reuters
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OSLO, March 22 (Reuters) - Stresses on water supplies aggravated by climate change are likely to cause more conflicts and water should be considered as vital to national security as defence, a United Nations report said on Friday.

About 145 nations share river basins with their neighbours and need to promote cooperation over a resource likely to be disrupted by more frequent floods and heatwaves, it said. ... Read more about Water as vital to national security as defence - UN

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UN-Water Defines Water Security, Highlights Threats & Mitigation Steps

Author: 

Andrew Burger
Credit: “Water Security & the Global Water Agenda: A UN-Water Analytical Brief”
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Equitable, broad-based public access to sustainable, sanitary supplies of water is increasingly being seen as a security issue. A growing world population, global warming, growing fossil fuel use and greenhouse gas emissions and ongoing, growing disparities in the distribution of wealth and income and business-as-usual political economy – all threaten national, regional and international efforts to assure all members of society fair access to sustainable water resources. ... Read more about UN-Water Defines Water Security, Highlights Threats & Mitigation Steps

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Global food crisis will worsen as heatwaves damage crops, research finds

Author: 

Damian Carrington
Sprinklers water crops in Bakersfield, California, during a heatwave. Photograph: David McNew/Getty Images David McNew/Getty
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The world's food crisis, where 1 billion people are already going hungry and a further 2 billion people will be affected by 2050, is set to worsen as increasing heatwaves reverse the rising crop yields seen over the last 50 years, according to new research. ... Read more about Global food crisis will worsen as heatwaves damage crops, research finds

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Aquatic agriculture offers a new solution to the problem of water scarcity

Author: 

Mark Tran
MDG Floating farms, Lake Nicaragua Photograph: Grand Challenges Canada
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Hunger and nutrition will feature prominently at the G8 summit in Northern Ireland in June, in keeping with the renewed interest in agriculture, especially in Africa, where investors are eyeing the potential of vast tracts of land.

But as experts note, water is the most severe impediment to increasing food production and security. ... Read more about Aquatic agriculture offers a new solution to the problem of water scarcity

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