Discussing his book and upcoming television series "Life on Earth," with the writer and narrator, David Attenborough.

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.

Margaret Mead discusses different cultures, anthropology, and society. Margaret Mead discusses topics such as immigrants, American society, poverty, and population explosion.

Discussing the book "The legacy of Malthus" with the author Allen Chase.