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Temporada 33
Data de estreia
Nov 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.
Data de estreia
Nov 11, 1992
Examining the relationship between illness and stress.
Examining the relationship between illness and stress.
Data de estreia
Nov 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.
Data de estreia
Nov 25, 1992
Poet Roger McGough explains the chemical elements.
Poet Roger McGough explains the chemical elements.
Data de estreia
Dez 02, 1992
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Raccoons thrive in Toronto; scientists study natural interactions dependent upon milkweed.
Data de estreia
Dez 16, 1992
Overfishing and other man-made problems threaten the oceans.
Overfishing and other man-made problems threaten the oceans.
Data de estreia
Dez 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.
Data de estreia
Jan 06, 1993
Gisele Benoit observes moose.
Gisele Benoit observes moose.
Data de estreia
Jan 20, 1993
How memory works, and the role it plays in our lives.
How memory works, and the role it plays in our lives.
Data de estreia
Jan 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.''.
Data de estreia
Fev 03, 1993
New research addresses the causes of diabetes and its treatment.
New research addresses the causes of diabetes and its treatment.
Data de estreia
Fev 16, 1993
The life cycle of the baboon.
The life cycle of the baboon.
Data de estreia
Fev 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.
Data de estreia
Mar 24, 1993
Scientists study the role of hormones in disease prevention and treatment.
Scientists study the role of hormones in disease prevention and treatment.
Data de estreia
Mar 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.
Data de estreia
Mai 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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