EDF: It may seem like only yesterday that Texans were asked to conserve water after another scorching summer, but in reality it was four, dry years ago. The drought, which began in 2010 after La Nia altered sea level temperatures in the Pacific, continues to persist in the Lone Star State and promises to surpass the states record-setting multi-year drought from the 1950s. Ranchers have been forced to sell off cattle, town water supplies continue to go dry, and power plants struggle to provide a reliable...