Truck rammed train from Black Sea to Nizhnevartovsk full of holidaymakers returning from Sochi.
State of emergency declared in city of Nizhnevartovsk, which suffers worst flooding in its history.
Mysterious 'lakes of black oily liquid' found near Nizhnevartovsk.
TNK-BP, a Russian-British company, is under fire concerning 784 environmental accidents reported in 2011, compared with 20 by rival Lukoil.
The freeze is so deep that horses - and even Rudolph - is brought indoors to warm up.
Traffic officer seriously injured after bravely placing own patrol car in front of buses carrying 93 youngsters to prevent head-on smash.
Endangered big cat is rescued from black market animal traders.
Two cargo jets purchased to supply goods bought on internet to remote Siberian locations.
What I wasn't expecting was just how beautiful everything looked under the sparkling white blanket of snow.