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As part of the International Polar Year, Polar Discovery brings you the stories of science on ice. The polar regions are experiencing unprecedented environmental changes that are having significant impacts on global climate, ecosystems, and society. Using the latest engineering advancements, scientists are studying the changing climate at the heart of the icy Arctic Ocean, the melting glaciers of Greenland, and the creatures of Antarctica's Southern Ocean. Our next expedition heads to Greenland starting July 7, 2008! Bundle up!