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, sensitive ecosystems are being altered by global warming. Shot in HD, in some of the world's most desolate and stunning locations, Arctic Circlemarries dramatic footage with hard science and striking computer graphics. In Episode One we meet scientists chronicling the effects of climate change on the land and animals. 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.