Arctic Secrets • 2015 • 3 episodes • 6h:24m

Embark on a journey into the world's most unforgiving arctic zones, where land and ice are inseparably joined. Swim through the mammoth Mackenzie Delta, or explore the great tundra of Nunavik. These hostile regions yield little for the hardy wildlife and local Inuit tribes that wait patiently for an all-too-brief summer.

Land of Extremes

The American Dipper can plunge its head into freezing Arctic water up to 60 times a minute. In the summer, ferocious mosquitoes can draw up to a pint of blood a day from caribou. Take a fascinating look into the Arctic seasons and the impact that rising sea levels have on local wildlife, and, ultimately, our own world.

1/8 • 2015 • Nature

Delta Discoveries

The Mackenzie Delta is an Arctic network of channels and islands at the mouth of Canada's largest river. It's home to the ancient Inuit, as well as a variety of highly specialized wildlife, including the sonorous sandhill and majestic peregrine falcon. Follow them as they contend with a rapidly changing climate.

3/8 • 2015 • Nature

Waiting for Winter

A polar bear mother keeps watch over her cub as they wait for the coming winter and the plentiful feeding opportunities it brings. But there are threats abound: from cannibalistic male bears, to the devastating impact of climate change, which has delayed the seasonal freeze and put them at risk of starvation.

8/8 • 2015 • Nature