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Nature's Great Race
Clues to the Zebra Odyssey
Scientists search for clues to the origin of the zebras' urge to migrate. With lifespans of just 15 years, signs point to a genetic urge, rather than a taught behavior.
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53:44
Join Africa’s longest land mammal migration as thousands of zebra trek through Botswana.
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53:48
A hundred thousand caribou migrate thousands of miles through a harsh Arctic wilderness.
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54:13
A thousand elephants come together in Kenya at a critical stage of their migration.