Nature

Sep 30, 1990 · 53m

Sharks, rays, squids and blue whales live in the Pacific Ocean off the California coast.

Oct 7, 1990 · 53m

Three species of monkeys, the muriqui, the golden lion tamarin and the buffy-headed marmoset struggle for survival in Brazil's coastal Atlantic Forest.

Oct 14, 1990 · 53m

A look at how Norway and Sweden are affected by eight months of winter.

Oct 21, 1990 · 53m

A look at the Swedish archipelago and Norway's fjords.

Nov 11, 1990 · 53m

Africa's spotted hyena is a matriarch dominated, efficient predator.

Nov 18, 1990 · 53m

Sight and sound are experienced through animal eyes and ears.

Nov 25, 1990 · 53m

Enhanced olfactory sensitivity; unique animal senses.

Dec 2, 1990 · 53m

Internal clocks guide life rhythms of eating, sleeping, mating, hibernation, birth and death.

Dec 9, 1990 · 53m

This program travels to the island of Cayo Santiago off Puerto Rico to study the behavioral patterns of a colony of feral Rhesus Macaques.

Dec 16, 1990 · 53m

Rangers at Denali National Park in Alaska train hikers for planned encounters with grizzlies; Alaskan grizzly bears are seen salmon fishing at Brooks Falls.

Jan 13, 1991 · 53m

Penguins, maras, guanacos, sea lions and killer whales highlight this portrait of Patagonia.

Feb 17, 1991 · 53m

In light of the Persian Gulf War and the recent oil spills, PBS airs an update of the 1984 episode of Nature, Treasures of the Gulf, that focused on the effects of the Iran-Iraq war on the fragile ecology of the Persian Gulf.

Feb 24, 1991 · 53m

The beauty of the African plains and the effects of tourism on the area.

Mar 3, 1991 · 53m

Filmmaker Simon Trevor, a former game warden, records the decimation of African elephants.

Mar 10, 1991 · 53m

The natural and human history of the Grand Tetons and Jackson Hole, Wyoming.

Mar 17, 1991 · 53m

Life within a close-knit golden jackal family on the plains of Lemuta in Africa.

Mar 24, 1991 · 53m

Biologist Lynn Rogers follows the black bear out of hibernation and into the Minnesota woods.

Apr 7, 1991 · 53m

The relationship within a wild dog pack on Africa's Serengeti Plains.

Apr 14, 1991 · 53m

A profile of the albatross examines its traits and habitats, as well as the mysteries and myths surrounding it.

Apr 28, 1991 · 53m

A polecat winters at a working farm in Wales, along with scavenging foxes, rats and birds.

May 12, 1991 · 53m

Grizzlies, wolves and cougars roam Montana's rugged, pristine Glacier National Park.