An amazing journey in Norway's Far North as Joanna Lumley pursues a lifelong dream to track down the elusive, stunningly beautiful Northern Lights - 'the true wonder of the world,' as she puts it.
Mush! Dash across the vast Alaskan and Canadian ice fields in -30��C temperatures with the aurora borealis glowing above. It's the toughest sled dog race in the world – the Yukon Quest. Competitors cross numerous mountains covered in thick snow and brave frozen rivers to reach the goal 1,600 kilometers from the starting line.