Reuters: The unrelenting drought gripping key farming states in the U.S. Plains shows no signs of abating, and it will take a deluge of snow or rain to restore critical moisture to farmland before spring planting of new crops, a climate expert said on Thursday. "It's not a pretty picture," said climatologist Mark Svoboda of the University of Nebraska's Drought Mitigation Center. Precipitation in the Plains region has been 3-6 inches shy of normal levels since October, and some areas are nearly 16 inches...