Guardian: The Catlin Arctic Survey, led by explorer Pen Hadow, is trekking on foot to the North Pole. The team were dropped on the ice on 2 March and are collecting data about the sea ice en route
Guardian: The Catlin Arctic Survey, led by explorer Pen Hadow, is trekking on foot to the North Pole. The team were dropped on the ice on 2 March and are collecting data about the sea ice en route