In this National Science Foundation video scientists discuss the International Polar Year, which aims to provide more information about our planet and environment through research conducted in and about the polar regions of the Arctic and Antarctic. Richard Alley, professor of geosciences at Pennsylvania State University, Diana Wall, director of the School of Global Environmental Sustainability at Colorado State University, and Hajo Eicken, professor of geology and geophysics at the University of Alaska in Fairbanks, join the talk.
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