Robert Marshall, Aldo Leopold and Howard Zahniser dedicated their lives to protect the shrinking American wilderness.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The New Deal program CCC put three million young men to work in camps across America.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
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.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
The inspiring story of the modern environmental movement.