Bears of the Last Frontier
Ecologist Chris Morgan travels to northern Alaska in late fall to see polar bears.
Ecologist Chris Morgan travels to northern Alaska in late fall to see polar bears.
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Female Adelie penguins lay their eggs then head for the sea as males guard the nests.
Deforestation threatens macaque monkeys of Japan.
Icebergs inch their way through miles and thousands of years to be born as an island.
Uncover the activity, both human and natural, that occurs on the slopes of volcanoes.
A surprisingly beautiful ecosystem is under the Antarctic Sea.
Glaciers shape the Earth's landscape and foster ecosystems.
In the Iditarod Sled Dog race, the bond between mushers and their dogs is vital.
Dog trainers take unwanted dogs and train them to herd sheep and sniff bombs.
Hugo van Lawick explores relationships within a wild-dog pack in Africa's Serengeti plain.
How wolves evolved into dogs.
The 14-most-ancient dog breeds and the living ancestors of all dogs.
Explore the talents and temperaments, needs and loves of puppies.
How a man's mission to kill a wolf had a lasting impact on wilderness preservation.
Two packs of wolves vie in northeast Yellowstone.
The grizzly and the wolf meet in Yellowstone National Park.
Ecologist Chris Morgan travels to northern Alaska in late fall to see polar bears.
Ecologist Chris Morgan explores the world of black bears.
Ecologist Chris Morgan camps among the largest concentration of grizzles in the world.
Grizzly bears cause social and environmental problems at Yellowstone National Park.
Bears and other animals in Alaska.
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