Permafrost preserved the ‘oldest blood in the world’ boosting hopes of bringing extinct species back to life.
Discovery of blood in creature frozen for 43,000 years is seen as major breakthrough by international team.
Here we go back in time and remember 13 remarkable moments of 2013.
Remarkable images show a test tube blood sample from a female of the long-extinct species.
'Sensational' find of two cubs, the best preserved ever seen in the world, announced today.