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Water covers about two-thirds of the Earth's surface, but only 2.5% of the world's water is not salty. Humans have available less than 0.08% of all the Earth's water. Yet over the next two decades our...
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Water covers about two-thirds of the Earth's surface, but only 2.5% of the world's water is not salty. Humans have available less than 0.08% of all the Earth's water. Yet over the next two decades our...
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