James Hooper and Rob Gauntlett became the first people ever to travel from the North Magnetic Pole to the South Magnetic Pole and on to Australia entirely under their own steam.

Trips over ice to the North Pole may be impossible in summer in just a decade or two because of global warming, says one of the world's leading polar adventurers.

Above the Arctic Circle, in Svalbard, Sarah McElrea has a magical encounter with some endangered inhabitants.