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1. Bölüm The area's evolutionary roots opens this look at the African valley.
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2. Bölüm The wildlife that lives on the Great Rift's ash plains.
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3. Bölüm Examines the Red Sea, the island of Madagascar and East Africa.
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4. Bölüm Soft coral, sponges, tubeworms, anemones and giant cod adapt to life in Antarctica's subzero waters.
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5. Bölüm Profiles the wildlife living within the British crown colony of Hong Kong
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6. Bölüm An exploration of the Caledonian forest in Scotland, Britain's largest remaining area of ancient woodland.
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7. Bölüm A portrait of the endangered mountain gorilla in equatorial Africa.
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8. Bölüm A look at the maneating tigers of the Sundarbans delta in India.
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9. Bölüm Resource management in Italy's alpine Gran Paradiso National Park has consequences beyond the parks boundaries.
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10. Bölüm Scientists study sandhill cranes on Nebraskan plains, Alaskan and Siberian coasts and in the Northwest Territories.
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11. Bölüm The forests and waters of Ethiopia's Bale Mountains, may one day renew the country's depleted landscape.
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12. Bölüm A look at how Europe's birds of prey have adapted.
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13. Bölüm The relationship between working sheepdogs and flocks of sheep. Selective breeding yields a sheepdog with outstanding abilities to tend the creature other canines prey upon.
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14. Bölüm Tracing the course of the Colorado River.
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15. Bölüm Thousands of years of human settlement provide the backdrop by which to discover the wildlife of Ireland.
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16. Bölüm The fur trade continues to threaten the South American otter with extinction, despite its status as an endangered species.
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17. Bölüm Profiles the Haida Indians who live on British Columbia's Queen Charlotte Island.
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18. Bölüm An exploration of the environmental impact of man's attempts to halt the erosion of Presque Isle beaches.
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19. Bölüm The effect of the 1988 fire on the ecosystem of Yellowstone National Park.
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20. Bölüm A natural history of the snake includes its significance to man as a symbol of fertility, immortality and death.