The world's largest land predators, polar bears spend the winter hunting and eating seals. Check out these photos of the polar bears of Churchill, in Manitoba.

View resources, online and in print, for NATURE's "The Polar Bears of Churchill with Ewan McGregor."

Discover the habits of these giant carnivores and find out the polar bears' secrets for surviving in the Arctic.

View additional resources, online and in print, for NATURE's "Great White Bear."

Scientists hoping to learn more about polar bears face an exhausting challenge: spending hours searching over huge territories and enduring harsh weather.

Despite a common image of the Arctic as a wasteland of ice and snow, some parts of the region can be lush with plant and animal life in the warmer months.

Download polar bear wallpaper for your desktop.

Find more information about polar bears and the Arctic with these additional Web and print resources.

View the production credits for NATURE's "Arctic Bears."