Sergey Golubev from Krasnoyarsk left on a 7,120 km round trip by dinghy in July, aiming to return in September.
Toxic fuel from 21,000 ton leak reaches pristine lake, bypassing floating booms, as rivers of diesel pollution cover-up is exposed.
Scientist thought he had stumbled upon an unusual stone, only for tests to show he had unearthed major dinosaur find.
New study predicts potential crises for herds after examining 81,000 animal losses after Yamal was carpeted with winter-long impenetrable ice.
Fear that thawing permafrost caused damage to storage tank.
A renaissance of one of Siberia's first outposts as the Far North becomes the new economic frontier.
After 1,907 kilometre odyssey, crossbreed is back home to his day job keeping polar bears at bay in remote weather station.
Major bid to check radioactive waste dump area in Arctic archipelago.