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Nobel laureate Joseph Stiglitz is an economist and a professor at Columbia University. He is a former chief economist of the World Bank and is a former chairman of the Council of Economic Advisers. His latest book is "The Great Divide: Unequal Societies and What We Can Do About Them." Professor Stiglitz was in the Northwest to speak at Town Hall Seattle, presented by Town Hall and University Book Store, as part of the Civics series.