Local reindeer herder witnessed the tundra explosion that led to birth of new hole in river.
Summer flooding will worsen dramatically, and the Arctic could be ice-free in summer by 2034.
Tribute for Druzhok who swam back to his own home to protect it against the rising tide of water, and became a symbol of hope.
Exports overseas increase to highest levels in seven years but Russia still slips behind rivals as Asia turns to other countries for wood.
Dark Ages man aged around 30 found in a medieval graveyard for unusually old people in the Russian Far East.
Druzhok was rescued once but swam back to do his duty on the doorstep of the waterlogged house in Eastern Russia.
Almost 3 million hectares on fire, including Arctic, with fumes having hit area larger than European Union.
Problems may not be over yet, warn meteorologists, as police are on high alert in 14 areas.
These extraordinary pictures give graphic new evidence of climate change.