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Nuclear physicist, Dr. Leo Seren, discusses atomic fission and nuclear experiments.
Evolution and the future of the human race are among topics in Carl Sagan's and Ann Druyan's book, "Shadows of Forgotten Ancestors: A Search for Who We Are." Included is an excerpt of the astronomer Harlow Shapley speaking at the beginning. Carl Sagan also reads 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.