Officially Colin Madsen, 25, died from hypothermia on a hiking trip in Buryatia, but his family are convinced he was killed.
The ancient mummy of a mysterious young woman, known as the Ukok Princess, is finally returning home to the Altai Republic this month.
Russian photographer writes about a volcanic eruption at Tolbachik, seen by the Soviets as the most lunar place on the planet.
Vladimir Putin surprises a female Siberian student with flowers on her 23rd birthday but also comes face to face with a woolly mammoth.
Remarkable images show a test tube blood sample from a female of the long-extinct species.
Currently there are 730,000 animals but numbers are 'unsustainable', risking disease spreading and chronic overgrazing.
Scientist warns of 'environmental disaster' due to 'irreversible' pollution in world's deepest and oldest lake.
International researchers have gleaned these extraordinary hidden scientific secrets by drilling 318 metres into a unique lake in northeastern Siberia.