Her 1963 warnings about the effects of pesticides and herbicides - especially DDT - sparked a revolution in environmental policy and created a new ecological consciousness.
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.
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.
The inspiring story of the modern environmental movement.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
The New Deal program CCC put three million young men to work in camps across America.
Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.