Do you know where you'll be waking up on Christmas morning? Well one teenager who grew up in London certainly does - he's hoping to spend the day in the South Pole, hundreds of miles from civilisation. 19-year-old Parker Liautaud is attempting to break the record for skiing across Antarctica.
Along the way he'll also carry out scientific experiments to investigate the impact on climate change on the area. Martin Stew went to meet him as he made his preparations - next to Tower Bridge.
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