A massive winter storm is sweeping across the United States this weekend, bringing travel to a standstill and threatening dangerous conditions for nearly half the country. The severe weather has already forced airlines to cancel roughly 11,000 flights, leaving thousands of travelers stranded. As of Saturday noon, tracking data showed about 4,000 flights had been […] Winter Monster: Massive Storm Grounds Over 11,000 Flights And Threatens Millions ...read more read less