Udall's formative years (1920-1960)
Udall as U.S. Secretary of the Interior (1961-1969)
First days at the Interior Department
Expanding the National Park System in the U.S. West
National Park System in the U.S. East
Protecting wildlife and expanding the National Wildlife Refuge System
Transitioning the Bureau of Land Management to multiple use
Establishing wild rivers and supporting reclamation
Exercising caution with oil, gas, and mineral development
Pushing for the Wilderness Act
Revitalizing the urban environment and stabilizing human population
Controversies of the Interior Secretary
Udall's life after politics (1970-2010)
Lobbying for energy conservation
Defending Navajo uranium miners
Climate change activist and historian
