The Hawaiian chain of islands, made up of six main islands plus two smaller ones, stretches for more than 1,500 miles through the heart of the Pacific Ocean. It is a place of idyllic beauty. But it is also a land of volcanic fury, raging mountaintop blizzards, dangerous rockslides, monster waves, and even tsunamis. Buy the DVD. This film premiered on January 9, 2005.

Although green is its emblematic color, Ireland’s verdant fields are not the nation’s only extraordinary natural features. Sculpted millions of years ago by the advance and retreat of vast shields of ice, the Emerald Isle harbors a wealth of wildlife among its craggy mountains, fog-shrouded coastlines, steep gorges, and vast networks of inland waterways. Buy the DVD. This film premiered March 28, 2004.

Unique to North America, the bald eagle is the continent’s most recognizable aerial predator, with a shocking white head, electric yellow beak, and penetrating eyes. In the 1960s, this symbol of the United States became an emblem of environmental degradation as the pesticide DDT and other human pressures brought it to the brink of extinction. But following their protection as an endangered species, bald eagles have come roaring back. Photographed by three-time Emmy-winning cinematographer Neil Rettig, this first-ever HD hour on bald eagles is an intimate portrait of these majestic raptors’ lives in the wild. Buy the DVD. This program premiered November 16, 2008.

Some 300 miles off Costa Rica is Cocos Island, a tiny Pacific outpost that was once a favorite haunt of pirates. Cocos, a designated World Heritage Site, lies directly in the path of powerful ocean currents that often collide with the island, churning the waters into an undersea storm. Welcome to Shark Mountain. Buy the DVD. This film premiered on November 14, 2004.