Described as 'wonders of nature', explore two of the most fascinating places on earth where the warm sand dunes meet the icy steppe.

Satellites show giant hole ringed by 20 'baby craters'.

The prospects of a cloned mammoth is nearer after the sensational discovery of 'living cells' from the ancient creatures in northern Siberia.

Biggest and 'best' in Russia, it is more like a 'reserve' than a traditional zoo.

Remarkable images show a test tube blood sample from a female of the long-extinct species. 

12,000-year-old remains of puppy were discovered perfectly intact sealed inside permafrost.

Scientists get inside a woolly mammoth's head to understand behaviour of the extinct species.

The $27-million Snezhinka (Snowflake) is seen as a future international science hub for biotech, robotic and AI-driven projects.