Nature
Rangers at Denali National Park in Alaska train hikers for planned encounters with grizzlies bears fish for salmon.
Rangers at Denali National Park in Alaska train hikers for planned encounters with grizzlies bears fish for salmon.
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Penguins, seals, soft corals, sponges, tubeworms, anemones and giant cod adapt to life in Antarctica's subzero waters.
Explore the difficulties and consequences of keeping and caring for parrots as pets.
The relationship and interdependence between man and dog that develop during the 1,200-mile Iditarod dog-sled race.
Dog trainers adopt unwanted dogs from shelters and train them to herd sheep and sniff bombs.
Wildlife filmmaker Hugo van Lawick explores relationships within a wild-dog pack on Africa's Serengeti plain.
Learn how the domestication of dogs might have taken place.
There are over 400 breeds of dog, each unique for its personality, habits, and form.
Ecologist Chris Morgan explores the world of black bears.
Ecologist Chris Morgan camps among the largest concentration of grizzles in the world.
The rescue of the grizzly population of Yellowstone and ensuing social problems.
Rangers at Denali National Park in Alaska train hikers for planned encounters with grizzlies bears fish for salmon.
Explore the delicate balance of the interconnected lives of bears, trees, and salmon.
Northwest Montana: wildest country left
Scientists, farmers, fishermen and nuns unite to save Mexico's rare aquatic salamanders.
Animals evolved amazing senses - now we're learning to adapt them for ourselves.
Scientists take inspiration from nature to create smarter, safer and more efficient gear.
The restoration of forest land in the British Isles helps revive the goshawk.
Men try to protect unique 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
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