The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The contradictory history of a dam that became a statement of American power and prestige.
In 1936 Angie Debo uncovered the U.S. government's theft of Native Americans' oil rich lands in Indian Territories of Oklahoma.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
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.