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Today, we are joined by the award -winning author Mark Kurlansky, whose books such as The Big Oyster, Paper, Salt and Cod tell us how commodities have shaped history and in turn the present day. Why commodities sit at the very heart of human history creating cooperation, trade but also war. Mark shares his views on the books and how they fit in with the current world, his views and philosophy on free trade, and how that might be in jeopardy and what his future books porjects are.