Map of shame: Greenpeace highlights junk and debris in dozens of sites across the 'pristine' environment.
Permanent patrols commence led by the heavy nuclear-powered guided-missile cruiser Pyotr Velikiy.
Unexpected find as scientists survey 'time capsule' site of 1901-02 encampment of intended North Pole explorers on remote Alger Island.
Mi-8 delivered Hannah McKeand and Canadian companion to remote island weather station but crashed soon after, as pair abandon North Pole attempt.
Marooned men went for up to 3 weeks without food on island in Laptev Sea in temperatures of minus 15C.
Evidence on Arctic island show how people 10,000 or more years ago carved sharp slices off tusks to use for killing and cutting.
A major new Arctic clean-up expedition is poised to start work getting rid of junk and pollution blighting this vast region.
Unique archeological and paleontological sites face destruction from gangs seeking to raid and sell prehistoric remains.
One region alone - Yakutia - has 5 million tons scrap metal dumped in polar regions, an ugly Soviet legacy.
Swift response by the Russian president to Canada's move to claim seabed under the North Pole and surrounding waters.