Discussing the book "An Anthropologist on Mars: Seven Paradoxical Tales" (published by Knopf) with the author, neurologist Dr. Oliver Sacks.

Discussing the book "Shadows of Forgotten Ancestors: A Search for Who We Are" about the evolution and the future of the human species. Includes an excerpt of the astronomer Harlow Shapley speaking at the beginning. Includes Carl Sagan reading an excerpt from the book at the end.

A sprawling conversation with R. Buckminster Fuller including his great aunt Margaret Fuller, future communication, the nature of work, human nature, and physics.

Vine Deloria discusses his book "The Metaphysics of Modern Existence", religion, ethics, Native Americans, Native American culture, and Native American history. Includes a previous interview with Vine Deloria at O'Hare Airport.

Dr. Oliver W. Sacks discusses people and concepts presented in his book "Seeing Voices"; the interview is for the paperback release.