In Summer, the non-stop sunlight fires an unrelenting thaw, transforming much of the polar regions into fertile land and open sea, while immense masses of melted sweet water pour into the oceans. Many species profit from the relatively benign conditions to mate, breed and raise their young. However for some, such as ice-bears, the lack of ice also causes major troubles in foraging and just moving around.
Stars: David Attenborough, Doug Allan, Doug Anderson
Writer(s): Paul Spillenger