Toxic fuel from 21,000 ton leak reaches pristine lake, bypassing floating booms, as rivers of diesel pollution cover-up is exposed.

Man ‘caused some of the tundra blasts forming the large holes’, says leading scientist in surprising new theory.

Pictures show child from Middle Ages as he is unwrapped after his remains were 'accidentally preserved' close to Arctic.

Global warming spells doom for boreal forests with potentially dramatic implications for carbon release in dark taiga.

Unique pictures show prehistoric forensic evidence: spear wounds on the Arctic beast's bone.

Putin hails 'pragmatism and common sense' as he launches US-Russian oil project in Kara Sea, which has Saudi-scale potential.

Fast track evolution as great Siberian symbol is surprisingly unmasked as an immigrant breed.

Satellites show giant hole ringed by 20 'baby craters'.