Greenwire: A large swath of Central Valley is sinking as farms pump groundwater in the face of searing drought, sparking a scramble for solutions as forecasts show no end to dry conditions. So says the U.S. Geological Survey, whose research shows land near the San Joaquin River sank by nearly a foot per year from 2008 to 2010, one of the most dramatic rates ever measured in the San Joaquin Valley. Using satellite imagery, scientists identified a sinking bowl that sprawls more than 1,200 square miles and includes...