The contradictory history of a dam that became a statement of American power and prestige.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
John Wesley Powell's epic journey into the unknown Grand Canyon was filled with adventure as his team mapped the Colorado River for the first time.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
A personal story of one family's dramatic effort to hold onto their family farm in Iowa as massive foreclosures sweep the nation in the 1990s.
The most daring and innovative accomplishment at the turn of the 20th century.