An arctic explorer who was the first UK woman to ski to the North Pole has said the hardest part wasn't the physical or mental challenges - but going to the loo.
Sue Stockdale, 56, was on her feet for hours each day, and could only cover 12 miles in 24 hours as the terrain was so tricky.
She would sleep in a tent on the ice and could feel it shift beneath her, reminding her that the threat of falling through was ever-present, as was the risk of being eaten by a polar bear.
