m_medium%3D10t oday.0129%26position%3D2%26chi navariant%3DFalse&utmmedium=10today.0129&position=2&part=sl&chi navari ant=False> Eighty years after David Haig-Thomas made a ground-breaking trek in the high Arctic, his great-nephew is following in his tracks <http://cdn.flipboard.com/telegraph.co.uk/26e5f8b4bb209