Fisherman keeps warm when his ice hole erupts in flames but he still netted a good catch
Subsidence from old coal mine a possible cause of latest mystery hole.
Man ‘caused some of the tundra blasts forming the large holes’, says leading scientist in surprising new theory.
High levels of ‘fire ice’ trapped in permafrost may turn Russia into a global leader of new gas sources.
Experts to visit remote craters to solve the puzzle on their creation.
Warning of methane blasts in Kara Sea adjacent to Yamal craters caused by gas eruptions associated with melting permafrost due to global warming.
Same phenomenon of discharge of gas hydrates 'led to crater formation in Russia and disappearance of ships in Atlantic'.
Gas bubbles from waters filling crater hole on Yamal peninsula two months after volcanic-style explosion in thawing permafrost.
Reindeer herders find more craters in the far north in a deepening puzzle for scientists.