Unique research station in the remote taiga is used by scientists worldwide to measure if man is behind climate change.
More craters expected to form due to such eruptions as permafrost melts - and they ARE caused by global warming releasing methane gas.
Scientists say a 'fountain of gas' poured from jelly-like trembling earth in tundra on Belyy Island in northern Siberia.
Satellites show giant hole ringed by 20 'baby craters'.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.
This summer's melting of permafrost is more than THREE TIMES greater than usual, unlocking long-frozen deadly diseases.
Warning of methane blasts in Kara Sea adjacent to Yamal craters caused by gas eruptions associated with melting permafrost due to global warming.