When Vadim Kolpakov went on an expedition to the north of Irkutsk region, he had no inkling of the sensational discovery he was about to make.
Reindeer herders find more craters in the far north in a deepening puzzle for scientists.
Satellites show giant hole ringed by 20 'baby craters'.
Besides, it is impossible to halt global warming which has been underway for many decades, insists the president.
Group of tourists got stuck at 2,300m after helicopter blades froze.
Unique pieces of skin from the late Jurassic era dinosaurs has been uncovered in a natural 'time capsule' by scientists in the Trans-Baikal region.
Leading expert assesses the risk of 'waking up' this deadly disease currently eradicated, and warns that rising Russian levels of HIV brings a far greater risk.
Blocks of soil and ice thrown hundreds of metres from epicentre of the funnel at the Yamal peninsula.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.