The story of a crucial, dwindling natural resource: an invisible ocean of fresh water under the Great Plains. The Ogallala aquifer contains enough water to fill Lake Erie not once but nine times over, and it stretches from Texas to South Dakota, from Colorado almost to Nebraska. Every year, five trillion gallons are pumped out for irrigation, and if the aquifer went dry (or, more accurately, when it goes dry), $20 billion worth of food and fiber would...
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Agricultural Sciences Agriculture Biological Sciences Biology Conservation Earth Sciences Economics Ecotourism Education & Reference Engineering Environment Environmental Economics Environmental Science General Natural Resources Nature Nature & Ecology Reference Science & Math Specialty Travel Technology Water Supply & Land Use