Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
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 New Deal program CCC put three million young men to work in camps across America.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
The most daring and innovative accomplishment at the turn of the 20th century.