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A giant glacier is seen making its way to the waters of Croaker Bay on Devon Island Friday, July 11, 2008. The Canadian Coast Guard icebreaker Louis S. St-Laurent is on its annual voyage through Canada's Arctic that includes patrols through the Northwest Passage. In addition to serving the people of Canada's North the ship is carrying a team of scientists studying climate change and the health of Canada's three oceans. (AP Photo/Jonathan Hayward, CP)