Page last updated at 17:46 GMT, Thursday, 30 April 2009 18:46 UK

The 6,000-calorie Arctic diet


Polar explorers Pen Hadow, Ann Daniels and Martin Hartley are trekking across the Arctic, taking measurements of sea-ice thickness as they go.

The team hopes its data - primarily now from drilling following the failure of a mobile radar unit - will help scientists better understand the changes taking place at the highest latitudes.

Here, Ann Daniels describes the food that make up the 6,000 calories needed each day to keep the explorers going.


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