6/7. Documentary series revealing the riches and wonders of polar regions. Today, their survival relies on a combination of ancient wisdom and cutting-edge science. Also in HD. [S,AD]
4/7. Nature documentary series. As the big freeze returns, polar landscapes are transformed. Wildlife leaves but the giant emperor penguin arrives. Also in HD. [S,AD]
3/7. Nature documentary. The impact of summer on polar bears, musk oxen and penguins, who struggle to cope with an unlikely problem - heat. Also in HD. [S,AD]
2/7. Documentary series. It's spring in the polar regions and, after a five-month absence, the sun reappears. The greatest seasonal transformation on our planet is under way. Also in HD. [S,AD]