Concern from scientists over potential danger to gas production facilities in region vital for energy supplies.
Up to 300,000 people a year expected to pass through Sabetta International as region gears up to become a gas powerhouse.
Wide-body aircraft being used for passengers flying into Sabetta International as region gears up to become a gas powerhouse.
A renaissance of one of Siberia's first outposts as the Far North becomes the new economic frontier.
Scientists rush to site of latest tundra eruption - which formed a crater 50 metres deep - amid fears for homes and key industrial sites.
Experts to visit remote craters to solve the puzzle on their creation.
Satellites show giant hole ringed by 20 'baby craters'.