Reuters: Thick snow covered the Washington D.C. area on Saturday as a potentially record-breaking blizzard paralyzed road, rail and airline travel on the U.S. East Coast from North Carolina to New York. More than 85 million people in at least 20 states were covered by a winter weather warning, watch or advisory, the Weather Channel said, and many stores were left with bare shelves as residents stocked up on food, water and wine, preparing to spend the weekend indoors. At least six people were killed in...