Scientists give startling theory for 1908 Tunguska Event in Siberia which had force of 185 Hiroshima bombs.
Cloning hope after autopsy of 'pet' frozen in permafrost since pre-historic times.
Exclusive footage of pioneering work by Russian and South Korean scientists finding oldest blood ever discovered from deep in the Ice Age.
Kerechene was laboratory-made in South Korea by scientists who also want to genetically engineer the return of the woolly mammoth.
This is the first picture of mammoth bone marrow from which scientists are seeking to extract DNA to bring the extinct giant back to life.
His cries woke other participants, and one shot the bear.
Locals hear 'booms from the underworld' in giant ravine but now scientists say it holds secrets of the planet's past.
Here we go back in time and remember 13 remarkable moments of 2013.
Puppies are 'designer' animals bred by South Korean cloning laboratory, but they flunked test in 13 simple skills for Russian police dogs.
Unique research station in the remote taiga is used by scientists worldwide to measure if man is behind climate change.