Palaeontologist says osteoporosis could have been major contributor, brought on by a lack of minerals in habitat from climate change.
Epicentre in Republic of Khakassia, but tremors were felt over a wide area including Krasnoyarsk city.
Geologists say as much as 44.8 billion roubles-worth has been found in valley to the north of famous range.
Inaugural trek through 10,000 year old Vasyugan Mire paves way for visitors to savour the unique flora and fauna.
Meanwhile, Emergencies' Minister vows better space monitoring of flooding as plans underway to stop a repeat of 2013 crisis.
Workers in northern Siberia have their own inventive way to cross a fast-flowing river.
Success for Liza Alert as snowmobile pair are tracked with help from people hundreds of kilometres away.
The Russian government is to give priority to Siberia and the Far East as it puts modernisation on fast-forward, insists Dmitry Medvedev.
Going by train all the way from Beijing (or even London) to New York could become a reality.