The first episode of Ice Worlds explores animal life at the poles, both North and South. At the North Pole American scientist Steve Amstrup tracks polar bears, from their hibernation during winter, to seeking food out on the tundra during summer. Down south, Antarctica's emperor penguins are studied by Gerald Kooyman, physiologist Arthur Devries catches Antarctic cod, and biologist Brent Sinclair seeks the continent's largest land animal — a tiny insect called a springtail. Ice Worlds was narrated by former news anchor Dougal Stevenson.
One collared bear travelled from Alaska, across the North Pole, all the way to Greenland, a distance of more than 3000 miles.– Narrator Dougal Stephenson on the migration of polar bears