In the mid 1930s, North America's Great Plains faced one of the worst man-made environmental disasters in world history. Donald Worster's classic chronicle of the devastating years between 1929 and 1939 tells the story of the Dust Bowl in ecological as well as human terms.Now, twenty-five years after his book helped to define the new field of environmental history, Worster shares his more recent thoughts on the subject of the land and how humans interact...