Leaning into advancements in camera and drone technology since its predecessor series aired 11 years prior, this remarkable sequel offering from the BBC Natural History Unit and David Attenborough broadens its scope from the polar caps to examining wildlife across the entire cryosphere, while taking note of the increasing impact global warming is wreaking on animal populations from mountaintops to tundra. 6 episodes. 6 hrs. Widescreen; Soundtrack: English.