Gregg Mitman is the Vilas Research and William Coleman Professor of History, Medical History, and Environmental Studies at the University of Wisconsin-Madison. An award-winning author and filmmaker, his recent films and books include The Land Beneath Our Feet and Breathing Space. He lives near Madison, Wisconsin.
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In the early 1920s, Americans owned eighty percent of the world's automobiles and consumed seventy-five percent of the world's rubber. But only one percent of the world's rubber grew under the US flag, creating a bottleneck that hampered the nation's expl... SEE MORE