Siberian mountaintop lavatory is 'the most extreme toilet in the world'.
Satellites show giant hole ringed by 20 'baby craters'.
A Copenhagen scientific expedition is on its way to prepare a claim that vast energy wealth under the Arctic belongs to the Danish Crown.
The number of Amur leopards in the wild in the Far East of Russia has dramatically increased, say wildlife experts.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
Elders claim mummy's absence has caused natural disasters and send new petition to Kremlin after first snub from Putin.
Scientists say a 'fountain of gas' poured from jelly-like trembling earth in tundra on Belyy Island in northern Siberia.
Novel approach to help recovery of leopard and tiger numbers in the Russian Far East.