When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
The inspiring story of the modern environmental movement.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The most daring and innovative accomplishment at the turn of the 20th century.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
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 life of the legendary photographer, known best for his black and white images of the wilderness of the American West.
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.
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.