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.

Captain Cousteau talks about his book and the environmental movement in the United States and elsewhere.

Francis S. Chase discusses education, art, and science. Chase also discusses creativity, human behavior, and technology among other topics.

The world spends 600 billon dollars on the arms race, which is rather puzzling to Dr. Helen Caldicott when 2/3 of the world's children are starving. Caldicott explained if a bomb went off in Chicago, there'd be a crater a half a mile wide and 300 feet deep. In addition, 90% of the people will be dead, some from being vaporized.

Studs talks with Donald Johanson about his book "Lucy: The Beginnings of Humankind," in which the famed paleoanthropologist describes his discovery of the female hominin fossil in Ethiopia. The conversation includes talk of Charles Darwin, Eugène Dubois' Java Man discovery, what makes a hominid, holes in the fossil record, fossil dating, his disagreements with Louis and Richard Leakey, site discovery, and his belief that the Hadar Formation in the Afar Triangle of Ethiopia holds the keys to the evolutionary puzzle. Includes snippets of the Beatles' "Lucy in the Sky with Diamonds."

Discussing the book "Time bomb" with the author Peter Van der Linde.

Studs Terkel discusses the energy and environment with Scott Bernstein, Frank Clark, and Amory B. Lovins. They talk about the company, Commonwealth Edison, and how the city has the right to grant or not grant franchises.

Discussing "Silent Spring," by Rachel Carson with environmental activist Lee Botts and botanist Dr. Orie Loucks.

According to Barry Commoner's book, "Making Peace with the Planet," we, as the human species, are in and are witnessing a war between the ecosphere and the technosphere. Commoner explains that today's cars emit a lot of smog into the big cities. Trucks move consumer goods from place to place, using four times more fuel than trains. Everyone should ask themselves what is their interest in the quality of the environment and that of nature.