Monthly Archives: May 2012

  • How Much Water is Available?

    Now we can start to answer the question, how much water is available to humans? Do you notice that tiny blue speck over Atlanta, Ga.? That’s the bubble representing freshwater in all the lakes and rivers on the planet. Most of the water that people and ecosystems need every day comes from these surface-water sources. The diameter of this sphere is a mere 34.9 miles, with a volume of a little over 22,000 cubic miles…

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