Planet Earth E06 Ice Worlds

As of its release in early 2007, Planet Earth is quite simply the greatest nature/wildlife series ever produced. Following the similarly monumental achievement of The Blue Planet: Seas of Life, this astonishing 11-part BBC series is brilliantly narrated by Sir David Attenborough and sensibly organized so that each 50-minute episode covers a specific geographical region and/or wildlife habitat (mountains, caves, deserts, shallow seas, seasonal forests, etc.) until the entire planet has been magnificently represented by the most astonishing sights and sounds you'll ever experience from the comforts of home. The premiere episode, "From Pole to Pole," serves as a primer for things to come, placing the entire series in proper context and giving a general overview of what to expect from each individual episode. Without being overtly political, the series maintains a consistent and subtle emphasis on the urgent need for ongoing conservation, best illustrated by the plight of polar bears whose very behavior is changing (to accommodate life-threatening changes in their fast-melting habitat) in the wake of global warming--a phenomenon that this series appropriately presents as scientific fact. With this harsh reality as subtext, the series proceeds to accentuate the positive, delivering a seemingly endless variety of natural wonders, from the spectacular mating displays of New Guinea's various birds of paradise to a rare encounter with Siberia's nearly-extinct Amur Leopards, of which only 30 remain in the wild.

Ice Worlds
The Arctic and Antarctic experience the most extreme seasons on Earth. Time-lapse cameras watch a colony of emperor penguins, transforming them into a single organism. The film reveals new science about the dynamics of emperor penguin behaviour.

In the north, unique aerial images show a polar bear swimming more than 100km. Diving for up to two minutes at a time. The exhausted polar bear later attacks a herd of walrus in a true clash of the Titans.