Archaeologists intrigued by discovery of Bronze Age razor blade in Novosibirsk region.
Scientists disclose vital statistics of 'Sibirosaurus', 20 metres (66 ft) in length, able to stand tall on hind legs.
Shots fired at island campsite to scare away beast which then drops ancient limb preserved in permafrost since prehistoric times.
Subsidence from old coal mine a possible cause of latest mystery hole.
The asteroid was 'the same size' as the meteor which exploded over Chelyabinsk injuring 1,500.
Hope for millions around world with preparations under way for clinical trials on people starting next year.
Remnants of this land mass still exist in Russia, the US, Canada and Greenland, says groundbreaking new research.
A new book suggests that early Europeans known as Solutreans made the crossing to America over a frozen and glacial ocean.
Tomsk State University scientists' invention can be deployed by police and security services in terrorist situations, also for rescues.
Experts have developed a way to zap household waste with a giant microwave reactor, turning it into coke, fuel and gas.