The world is in the midst of a boom in groundwater use. The rate of extraction from aquifers more than doubled in the 40 years to 2000. It has continued to soar since then.
Professor Craig Simmons, who directs Australia’s National Center for Groundwater Research and Training, says as much as 40 percent of humanity’s total water supply now comes from underground. It is not only used for drinking, but is also needed to grow food and support many industries.
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