Life in the extreme. In a fragile world of beauty and hostility, nature finds a way to survive and thrive. Sir David Attenborough explores a planet on the brink of major change.
Journey to the top of the world to witness firsthand how the planet's changing climate is affecting the creatures that inhabit the icy Arctic. See how the quickly melting Arctic ice affects the survival skills of ringed seals, polar bears, and narwhals.