The North Pole lies at the very top of our world. Covered in a thick layer of sea ice, this uninhabitable frozen point in the Arctic Sea has fascinated us for centuries as both a physical location on a map and as a far away place in our imagination. Warmer than the South Pole, the northernmost point of the Earth’s axis sits outside of any time zone in a place where the sun rises and sets just once a year. Today, it has come to symbolise a warming planet but remains linked to exploration and mythology.

Joining Bridget Kendall to discuss the North Pole are the explorer, author and former climate scientist Felicity Aston MBE; Klaus Dodds, Professor of Geopolitics at Royal Holloway, University of London, and author of the forthcoming book The Arctic: What Everyone Needs to Know; and Michael Bravo, Senior Lecturer at the University of Cambridge, Head of Circumpolar History and Public Policy Research at the Scott Polar Research Institute and author of a new book called North Pole.

Photo: Robert Peary's North Pole Expedition. (Getty Images)