Challenge to polar doom warning from respected international expert Professor Peter Wadhams of Cambridge University.
Here we go back in time and remember 13 remarkable moments of 2013.
A dozen out of the 15 teams finished the race which began three weeks ago.
These extraordinary pictures give graphic new evidence of climate change.
Pilot error, technical malfunction and bad weather are all possible causes checked by investigators.
72 year old Agafya Lykova begged for help saying she was short of food.
New statistics on Saturday showed the vast scale of the human effort in Russia to halt a natural disaster that has destroyed swathes of woodland and taiga.
The freeze is so deep that horses - and even Rudolph - is brought indoors to warm up.