On 10 February, eight travellers set out on a two month odyssey covering 4,000 km through some of the world's most inhospitable terrain.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Monuments to the Bolshevik leader are the key to a new competitive sport called Lenining.
Journey 'in search of my father', as joint Russian-American expedition sets out to bring home crashed wartime Douglas C-47 from tundra.
Mi-8 delivered Hannah McKeand and Canadian companion to remote island weather station but crashed soon after, as pair abandon North Pole attempt.
The bear 'had wrong compass settings’ and came south, the first polar bear seen in city since 1970s.
Bulging bumps in the Yamal and Gydan peninsulas believed to be caused by thawing permafrost releasing methane.
Macabre remains of six slaughtered polar bears, 'beheaded with their skins removed', now under criminal investigation.
Avelina Antsiferova fulfilled her life's dream when she sat in cockpit of wartime Douglas C-47, 69 years after kissing her papa goodbye for last time.