When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
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.
In 1927, the Mississippi River flooded from New Orleans to Illinois, leaving a million people homeless and leading to a major black migration to the North.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
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.