Scientists and Coast Guard Cutter Healy crew members gather ice core and water samples at the North Pole Sept. 7, 2015. Healy is underway in the Arctic Ocean in support of the National Science Foundation-funded Arctic GEOTRACES, part of an international effort to study the distribution of trace elements in the world's oceans. Coast Guard photo by Petty Officer 2nd Class Cory J. Mendenhall.

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: arctic, geotraces, healy, icebreaker, north, pole