<DIV> The author chronicles the search for . . . a theory to explain all natural fields and their interaction with particles. . . . Lives and contributions of physicists and cosmologists, starting with the pioneers of scientific cosmology in the 19th century, are described. Topics range from Maxwell's discovery of the laws of magnetic fields to Hawking's work on black hole physics. A concluding chapter looks at the current state of unified field theory. (Sci Books Films) </DIV>