Evidence on Arctic island show how people 10,000 or more years ago carved sharp slices off tusks to use for killing and cutting.
More craters expected to form due to such eruptions as permafrost melts - and they ARE caused by global warming releasing methane gas.
Russian scientists deny theory of respected Italian team by 'proving' that the remote blue lake is older than the famous 1908.
Famed for the purest water on the planet, but this 'is no longer true' with 'no drinking' warning in southern part of lake.
Dozens of major tremors recorded this year as scientists monitor 'unusually strong seismic activity' that will one day tear continent in half.
A study suggests cannabis, magic mushrooms and ecstatic dancing was used as ancient anaesthetic.
Siberian ancestors hunted the squat short-legged horse, even though this type of animal was believed to have been wiped out 400,000 years ago.
13 year old revealed as the daughter of a Neanderthal mother and a Denisovan father - separate humanoid groups now proven to have crossbred.