Aired: 10/8/1989
The area's evolutionary roots opens this look at the African valley.
Aired: 10/15/1989
The wildlife that lives on the Great Rift's ash plains.
Aired: 10/22/1989
Examines the Red Sea, the island of Madagascar and East Africa.
Aired: 10/29/1989
Soft coral, sponges, tubeworms, anemones and giant cod adapt to life in Antarctica's subzero waters.
Aired: 11/12/1989
Profiles the wildlife living within the British crown colony of Hong Kong
Aired: 11/19/1989
An exploration of the Caledonian forest in Scotland, Britain's largest remaining area of ancient woodland.
Aired: 12/10/1989
A portrait of the endangered mountain gorilla in equatorial Africa.
Aired: 12/17/1989
A look at the maneating tigers of the Sundarbans delta in India.
Aired: 1/7/1990
Resource management in Italy's alpine Gran Paradiso National Park has consequences beyond the parks boundaries.
Aired: 1/21/1990
Scientists study sandhill cranes on Nebraskan plains, Alaskan and Siberian coasts and in the Northwest Territories.
Aired: 2/4/1990
The forests and waters of Ethiopia's Bale Mountains, may one day renew the country's depleted landscape.
Aired: 2/11/1990
A look at how Europe's birds of prey have adapted.
Aired: 2/18/1990
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.
Aired: 3/4/1990
Tracing the course of the Colorado River.
Aired: 3/11/1990
Thousands of years of human settlement provide the backdrop by which to discover the wildlife of Ireland.
Aired: 3/18/1990
The fur trade continues to threaten the South American otter with extinction, despite its status as an endangered species.
Aired: 3/25/1990
Profiles the Haida Indians who live on British Columbia's Queen Charlotte Island.
Aired: 4/1/1990
An exploration of the environmental impact of man's attempts to halt the erosion of Presque Isle beaches.
Aired: 4/8/1990
The effect of the 1988 fire on the ecosystem of Yellowstone National Park.
Aired: 4/15/1990
A natural history of the snake includes its significance to man as a symbol of fertility, immortality and death.
