Scientists rush to site of latest tundra eruption - which formed a crater 50 metres deep - amid fears for homes and key industrial sites.

Reindeer herders find more craters in the far north in a deepening puzzle for scientists. 

Governor takes charge of rescue operation and sends ‘don’t panic’ message plus blankets, water and food to coal workers.

Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.

Research of stalactites and stalagmites in a cave near Lensk in Sakha Republic show the dire threat to the planet from global warming, says a new study.

Sparkling discovery of precious gems in solidified lava of Tolbachik flare-up.

Arctic permafrost is degrading much faster than expected, warn scientists from the extreme north of Yakutia.

These extraordinary pictures give graphic new evidence of climate change.