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National Geographic Explorer and freshwater expert Sandra Postel knows that if we want to ensure a safe environment and prosperous life for all of humanity in the 21st century and beyond, we must change the way we think about water. Our planet is covered with beautiful blue water, however, less than .01% of the world’s water is drinkable and renewable. A growing population and overuse has jeopardized our freshwater supply, which to sustain will require different policies, new technologies and a renewed commitment to be responsible stewards of this life-giving resource. The Colorado River susta
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