Canada case: Ottawa lodges claim over North Pole
Norway explores the faraway north
22 May 2012 10:38 GMT
A new age of Arctic explorers
12 November 2010 01:16 GMT
Russia flags up intentions in race for Arctic treasure
Arctic Ocean carve-up on agenda
26 May 2008 05:13 GMT
US and Canada team for Arctic survey
23 July 2009 09:44 GMT
10 December 2013 10:28 GMT
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