Father missing under snow; more than 200 people continue search and rescue at -23C, snowstorm and bleak light of polar night.
Baikal is located in a rift zone, a deep crack in the Earth's crust which narrows at depths of several dozen kilometers. A tranquil video of white and silver bubbles of methane caught in newly-formed ice was filmed at Maloye More, a strait that separates the lake's largest island from the western shore of Lake Baikal.
The exact reason of the leak is yet to be established, but a statement from Norilsk Nickel company, which operates the site suggests it could have been caused - worryingly - by collapsing permafrost.
Major rescue operation on the island of Sakhalin went on for two days. Some of the fishermen made their way back to safety on ice floes, using ice diggers as oars.
Permafrost preserved the ‘oldest blood in the world’ boosting hopes of bringing extinct species back to life.
Scientists confirm loss of ‘Pearl’ island, while schoolchildren using satellite maps identify one of the new icy Russian isles.
Blame for pollution is focused on failure of coal plant to filter emissions.
The aim is to give warnings over seismic activity that could lead to the sudden formation of new craters, which could potentially damage key industrial infrastructure.
Amazing footage shows the bears just 150 metres from the nearest house as shooting is criticised - but does little to deter predators.
Urgent measures underway to evacuate residents of remote villages after flood threat caused by rising water above new ‘dam’.
Unique paleontological sites are facing destruction from gangs seeking to sell prehistoric remains. The hunters are especially active in late summer, when the permafrost retreats leaving mammoth remains more visible.
Yakutia in a white blanket as temperatures dip to minus 6C as winter 'comes too soon'.
Video shows hero climbers manually breaking ice off its cable stays at height of 324m (1,063ft) in Vladivostok.
March brings a gathering of paddle boarders on a big ice floe in Ussuri Bayk. The air temperature didn't go above 10C and water was at maximum of 5C.
Hundreds of craters caused by methane explosions were discovered underneath Barents sea. Further research finds evidence that the violent explosions could happen again in the future.
Many Pacific islands are famed for their palm trees, but Sakhalin is facing some of the heaviest January blizzards in living memory.
Instead of halibut, fisherman are increasingly catching less valuable Pacific cod, voracious bottom feeders whose numbers in recent years have exploded.
Thawing sea ice may have opened the door, allowing the infection to cross oceans, a new study suggests.
This tadpole-shaped gash in the Earth's surface - around one kilometre long, and 800 metres wide - is enlarging by up to 30 metres a year.
The bears that come to the northern village of Kaktovik are climate refugees, on land because the sea ice they rely on for hunting seals is receding.
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