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Σεζόν 33
Ημερομηνία προβολής
Νοέ 04, 1992
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.
Ημερομηνία προβολής
Νοέ 11, 1992
Examining the relationship between illness and stress.
Examining the relationship between illness and stress.
Ημερομηνία προβολής
Νοέ 18, 1992
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.
Ημερομηνία προβολής
Νοέ 25, 1992
Poet Roger McGough explains the chemical elements.
Poet Roger McGough explains the chemical elements.
Ημερομηνία προβολής
Δεκ 02, 1992
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Ημερομηνία προβολής
Δεκ 16, 1992
Overfishing and other man-made problems threaten the oceans.
Overfishing and other man-made problems threaten the oceans.
Ημερομηνία προβολής
Δεκ 23, 1992
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.
Ημερομηνία προβολής
Ιαν 06, 1993
Gisele Benoit observes moose.
Gisele Benoit observes moose.
Ημερομηνία προβολής
Ιαν 20, 1993
How memory works, and the role it plays in our lives.
How memory works, and the role it plays in our lives.
Ημερομηνία προβολής
Ιαν 27, 1993
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.''.
Ημερομηνία προβολής
Φεβ 03, 1993
New research addresses the causes of diabetes and its treatment.
New research addresses the causes of diabetes and its treatment.
Ημερομηνία προβολής
Φεβ 16, 1993
The life cycle of the baboon.
The life cycle of the baboon.
Ημερομηνία προβολής
Φεβ 24, 1993
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.
Ημερομηνία προβολής
Μαρ 24, 1993
Scientists study the role of hormones in disease prevention and treatment.
Scientists study the role of hormones in disease prevention and treatment.
Ημερομηνία προβολής
Μαρ 31, 1993
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.
Ημερομηνία προβολής
Μάϊ 30, 1993
Global warming may cause rising sea levels and agricultural disaster.
Global warming may cause rising sea levels and agricultural disaster.
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