Male, female and two cubs spotted in Ak Cholushpa Nature Park in Altai Republic.

Previously unknown subspecies confirmed by DNA tests and probably numbering around 400.

Earth is moving as 'leaking methane gas due to global warming causes surface to bubble' in a new phenomenon.

Colin Madsen, 25, enjoyed night-walking in Siberia but never came back after going out on Sunday.

Hi-tech project would use computer models to predict climate change and help with safe production of oil and gas in Northern Russia.

Same phenomenon of discharge of gas hydrates 'led to crater formation in Russia and disappearance of ships in Atlantic'.

Haunting beauty of massive hole as scientists examine frozen lake formed after giant blowout.

The marine mammals were washed ashore on an 800 kilometre stretch of the region's Arctic coast.