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Évad 33
Bemutató időpontja
1992 Dec 04
Alberta ranchers fear that a bison herd in Wood Buffalo National Park carries communicable diseases.
Alberta ranchers fear that a bison herd in Wood Buffalo National Park carries communicable diseases.
Bemutató időpontja
1992 Dec 11
Examining the relationship between illness and stress.
Examining the relationship between illness and stress.
Bemutató időpontja
1992 Dec 18
Environmentalists, the oil industry and politicians debate drilling for oil in Alaska's Arctic National Wildlife Refuge.
Environmentalists, the oil industry and politicians debate drilling for oil in Alaska's Arctic National Wildlife Refuge.
Bemutató időpontja
1992 Dec 25
Poet Roger McGough explains the chemical elements.
Poet Roger McGough explains the chemical elements.
Bemutató időpontja
1992 02
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Bemutató időpontja
1992 16
Overfishing and other man-made problems threaten the oceans.
Overfishing and other man-made problems threaten the oceans.
Bemutató időpontja
1992 23
Toys play a role in childhood development and help children learn to cope with a complex world.
Toys play a role in childhood development and help children learn to cope with a complex world.
Bemutató időpontja
1993 Feb 06
Gisele Benoit observes moose.
Gisele Benoit observes moose.
Bemutató időpontja
1993 Feb 20
How memory works, and the role it plays in our lives.
How memory works, and the role it plays in our lives.
Bemutató időpontja
1993 Feb 27
Anthropologist Dr. Shirley Strum reveals the social behavior of a troop of African olive baboons known as the ``Pumphouse Gang.''.
Anthropologist Dr. Shirley Strum reveals the social behavior of a troop of African olive baboons known as the ``Pumphouse Gang.''.
Bemutató időpontja
1993 Már 03
New research addresses the causes of diabetes and its treatment.
New research addresses the causes of diabetes and its treatment.
Bemutató időpontja
1993 Már 16
The life cycle of the baboon.
The life cycle of the baboon.
Bemutató időpontja
1993 Már 24
A natural park protecting one of the world's last remaining undamaged coral reefs is located off the coast of Egypt.
A natural park protecting one of the world's last remaining undamaged coral reefs is located off the coast of Egypt.
Bemutató időpontja
1993 Ápr 24
Scientists study the role of hormones in disease prevention and treatment.
Scientists study the role of hormones in disease prevention and treatment.
Bemutató időpontja
1993 Ápr 31
Close-up photography shows the plants and animals that inhabit the bogs of the world, including orchids, mosses and carnivorous plants.
Close-up photography shows the plants and animals that inhabit the bogs of the world, including orchids, mosses and carnivorous plants.
Bemutató időpontja
1993 Jún 30
Global warming may cause rising sea levels and agricultural disaster.
Global warming may cause rising sea levels and agricultural disaster.
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