U.S. Icebreaker to Map Arctic Sea Floor
The U.S. Coast Guard icebreaker Healy is shown leaving Seattle Monday, Aug. 6, 2007, for a scientific mission in the Arctic that will include breaking ice well north of Barrow, Alaska. The seven-year-old Healy is the nation's newest icebreaker. It\'s 420 feet long and is capable of breaking ice eight feet thick. (AP Photo/Ted S. Warren)
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