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Andy Bunn, an assistant professor in the Department of Environmental Sciences at ��������, presents “The Polaris Project: A barge, twenty bunks, and a river at the top of the world,” discussing his work in the Siberian Arctic with undergraduates from eight American and Russian universities. The project’s guiding scientific theme is the transport and transformations of carbon and nutrients as they move along the Kolyma River from terrestrial uplands to the Arctic Ocean. This is a central scientific issue as scientists struggle to understand a rapidly changing Arctic. In this lecture, Bunn discusses the involvement of �������� undergraduates during the past two summers and describes some of their scientific achievements and cultural experiences.