Dogs That Changed the World
The 14-most-ancient dog breeds and the living ancestors of all dogs.
The 14-most-ancient dog breeds and the living ancestors of all dogs.
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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.
Explore the delicate balance of the interconnected lives of bears, trees, and salmon.
Wrangell-Saint Elias National Park and Preserve.
Covert cameras uncover the wealth of wildlife found in Britain's upland forests.
Protecting Brazilian animals and plants threatened by development of the Amazon jungle.
The human and natural histories of the Grand Tetons and Jackson Hole, Wyo., interlink.
Doug Peacock, wildlife and his conservation crusade.
The creatures in the hostile environment of the Drakensberg Mountains in Southern Africa.
How wildlife and animal life survive in a severe landscape with temperatures well above 115 degrees.
Examine the plants and animals that have adapted to the harsh environment of the Kalahari.
Capture the interaction between the Kalahari Desert and the Okavango River delta.
Watch as the Kalahari swarms with life brought forth by a brief season of sudden storms.
Undisturbed the saguaro cactus can grow to 60 feet, weigh 10 tons and live 150 years.
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