Clips from Bill's conversations with scientists Jane Goodall, Sir John Houghton and the late Isaac Asimov, who shared their views on the intersection between religion and science.

In this 20-year compilation, Bill speaks to a wide range of people -- from average Americans to household names like David Rockefeller, Maya Angelou, Ronald Reagan and Joseph Campbell.

One scientist calls the writer the greatest explainer of the age. In this second part, Bill Moyers talked to Dr. Asimov about science, education and the universe.

In this classic interview, Isaac Asimov explains that he is not an enemy of religion, how scientists are among the most moral people he knows and the urgent need to check population growth.