Episodes

S23 Ep4
Violent Hawaii
Violent Hawaii
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.
Premiered January 8, 2005
S23 Ep3
The Good, the Bad, and the Grizzly
The Good, the Bad, and the Grizzly
After a decades-long comeback, the grizzly bears of Yellowstone National Park appear to be thriving. Should they now be removed from the protection of the Endangered Species Act? This question has provoked one of the most emotionally charged wildlife controversies in America today.
Premiered November 20, 2004
S23 Ep2
Shark Mountain
Shark Mountain
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.
Premiered November 13, 2004
S22 Ep12
Ireland
Ireland
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.
Premiered March 28, 2004