Yale Environment 360: Oil and natural gas fracking requires 28 times more water now than it did 15 years ago, according to a study by the U.S. Geological Survey. The increased water demand is attributed to the development of new, water-intensive technologies that target fossil fuels in complicated geological formations, the researchers say. The amount of water used varies greatly with location, the study found. A fracking operation in southern Illinois, for example, can use as little as 2,600 gallons of water each time...