Three Russian nuclear powered icebreakers are leading a huge gas tanker through the Arctic waters on the roof of Siberia. 

Local reindeer herder witnessed the tundra explosion that led to birth of new hole in river.

Total of 110,000 tonnes sent to Europe across the new Northern Sea Route.

200 metres wide thermocirque seen weeks after scientists find funnel in the Yamal peninsula, caused by build up of methane.

Map of shame: Greenpeace highlights junk and debris in dozens of sites across the 'pristine' environment.

Expert says deadly gas released from melting permafrost region will lead to 'awful' consequences for global warming.

Satellites show giant hole ringed by 20 'baby craters'.

Underground cryostorage facility will become largest in world, using Siberia's permafrost to naturally safeguard food and plants for 100 years.