A soldier is hoping to become the first double amputee to walk to the South Pole in a team made up of wounded servicemen and women.
Scientists have discovered a hidden colony of 9,000 penguins in Antarctica.
The British explorer will travel across Antarctica during the southern winter, where temperatures can plummet to -90C.
A charity for injured servicemen and women has been awarded £100,000 from a fund set up by the Duke and Duchess of Cambridge and Prince Harry.
Walking With The Wounded - which helps retrain injured military personnel for careers in civilian society - was given the grant by the Endeavour Fund for its 2013 South Pole Allied Challenge.
Harry, the expedition patron, announced last month that he will make the gruelling 210-mile trek across Antarctica this winter.
The Endeavour Fund was set up last year as part of William, Kate and Harry's Royal Foundation with the aim of enabling more wounded servicemen and women to take part in expeditions and sporting challenges.
Sir Ranulph Fiennes says he has been left "frustrated" at being forced to pull out of an Antarctica expedition because of frostbite. The adventurer was injured after a fall at a base camp and developed frostbite after taking off his outer gloves in temperatures of -33 celsius.
Speaking after arriving back in the UK, Fiennes explained how the expedition had been five years in the planning.
Drilling was due to begin at the weekend but one of the boilers used to melt snow failed to start up. New parts have been ordered but drilling is not likely to resume before December 21.
Professor Martin Siegert, principal investigator of the Lake Ellsworth team, explains more:
Prince Charles has given his royal seal of approval to the Ice Team before they embarked upon their mission to walk across Antarctica during the coldest time of the year. The Prince of Wales is the patron of the Antarctic Winter Crossing Expedition 2012.
The six man team who will attempt to walk across Antartica over the next six months have set sail on their ship the SA Agulhas.
Brian Newham, Sir Ranulph Fiennes, Ian Prickett, Spencer Swirl, Richmond Dykes and Dr Robert Lambert hope to raise more than six million pounds for charity.
The world's greatest living explorer, Sir Ranulph Fiennes, is receiving a royal send off from Prince Charles as he begins his latest record breaking challenge. He's attempting to become the first person to cross the Antarctic on foot during winter.
The expedition will take place in temperatures as low as -70C, much of it in total darkness. Our Science Editor Lawrence McGinty has been to meet him.
Sir Ranulph and his five-man team will cross the continent during winter over a six-month period. Going with them will be two machines to help carry their equipment.
Celebrity supporter Joanna Lumley joined Sir Ranulph Fiennes by the bank of the River Thames in central London today in the final hours before his expedition across the Antarctic gets underway.