Filmed by Emmy Award-winning cinematographer Al Giddings, this timeless program takes a stirring look at the largest, tallest, longest-living things on the planet: trees. Stunning location footage captures the variety and the grandeur of the Pacific Northwest, the Florida Everglades, the Shenandoah Valley, and the Great Sonoran Desert. Quotations from Sierra Club founder John Muir and others who revere nature are interwoven with information on topics ranging from the function of forest ecosystems, to the effects of deforestation, to the integration of parks into urban landscapes.

The summits and sheer mountain ridges of Austria’s "Little Siberia" funnel the freezing air from sno...

The Southern Sea Otter was historically abundant along the California coastline until intense huntin...

Sea otters are once again in peril after being brought back from the brink of extinction. An unprece...

Follows the story of "Grizzly Man" Timothy Treadwell and what the thirteen summers in a National Par...
A Weaverly Path offers an intimate portrait of Swiss-born tapestry weaver Silvia Heyden. The film ca...

Every year, thousands of Antarctica's emperor penguins make an astonishing journey to breed their yo...

The island of New Guinea is the setting for this film, which focuses on the landscape, the life of t...

Filmed on location in Montana and Washington State, this 1976 biography of poet and teacher Richard ...

Drawing from never-before-seen footage that has been tucked away in the National Geographic archives...

Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron...

Investigation into a global ecological disaster that could endanger the entire human race. Today, a ...

Documentary about chimps in Gombe.

It follows a group of investigators as they return to the nuclear zone in Fukushima to uncover the s...

The true story of the birth, growth and coming of age of a leopard cub in Africa's Serengeti plain. ...

Coral Reef Adventure follows the real-life expedition of ocean explorers and underwater filmmakers H...

The story of the evolution of tropical rain forests, their recent and rapid destruction, and the int...

Carefully picked scenes of nature and civilization are viewed at high speed using time-lapse cinemat...