Climate change is hitting the Arctic harder and faster than any other region on Earth. Although the North may seem remote from the population centres of the world, this is where the impact of human activity - sensitive ecosystems forever altered by climate change - is felt the most. Shot in HD, in some of the world's most desolate and stunning locations, Arctic Circle marries dramatic footage with hard science and striking computer graphics to tell the story of climate change as nobody has seen it before. In Episode 1 we meet international teams of scientists who are chronicling the effects of climate change on the land and its animal inhabitants. We see huge ice shelves crumbling into the sea, polar bears struggling to survive and torrents of water flowing where there should be only ice.