An expedition is underway to locate and analyse deposits of methane in 'underwater permafrost' in the seas of Okhotsk and Japan.
Drifts have reached one metre in height with schools closed, cars abandoned and even a military tank pulling out stranded drivers.
Hi-tech technologies have been used to track smoke plumes from forest fires burning across eastern Russia as they cross the Pacific.
Our map shows the attacks by bears on humans across a swathe of Siberia and the Russian Far East.
A 1,159 metre volcano named after one of Russia's most fearsome tsars erupted early Thursday for the first time in 23 years.
Few businessmen know Russia as well as Vadim Dymov, but he has a special affection for Siberia - and Siberians.
RusHydro, RosGeologiya and Transneft 'to rebase from Moscow to the Far East'.
Armed man guns down a nun and worshiper during prayers on Sunday.
After 72 days stopover in Russia, British solo pilot Colin Hales continues his world tour.