Nuclear physicist, Dr. Leo Seren, discusses atomic fission and nuclear experiments.
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.
Studs Terkel plays a variety of audio clips pertaining to the concepts of life and mankind destroying itself. The audio clips featured are from various established and respected writers, social leaders, and musicians.