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Caribou on the Move

Photo: A wading herd of barren-ground caribou
Caribou migrate north each summer in one of the greatest wildlife spectacles on Earth. Feeding mostly on grasses and plants in the summer, caribou eat lichen and mushrooms during winter.
Photograph by Todd Buchanan

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Caribou Features

Photo: American bison

Historic Journey

Follow in Lewis and Clark's footsteps in this cross-country interactive journey.

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Fall of the Wild

Take a virtual journey to Alaska's North Slope in this multimedia feature.

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