Sir Ranulph Fiennes on his toughest challenge

The man regarded as the world's greatest living explorer, Sir Ranulph Fiennes is preparing for his toughest challenge yet.

The adventurer is planning to become the first person to cross Antarctica on foot during the polar winter. During the expedition, called The Coldest Journey on Earth, he'll face temperatures as low as minus 72 degrees celsius.

Here he tells us all about it.

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7 minutes

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