On April 14, 1935 in Boise City, Oklahoma, the sky turned black as a massive, swirling cloud of dust engulfed the city. "It got so dark that you couldn't see your hand before your face," remembered one farmer. Blinded drivers drove their cars off the side of the road. Terrified cows spun in circles. People covered their faces, gasping for breath. This was one of many dark days during the Dust Bowl. Sick Soil: The Dust Bowltraces the tragic story of...