From the reviews: "For more than 20 years, the physical theory of the fundamental nature of matter and force has stood almost motionless. It describes everything and explains nothing, and now a group of researchers is playing with radical revisions in order to get ideas moving again. Webb writes clearly and exactly, and is obviously in close touch with recent developments." (D. Park, CHOICE, Vol. 42(3), November, 2004) "After introducing general relativity and quantum mechanics . Then, in a series of increasingly astonishing chapters, he introduces us to the seemingly outlandish and bizarre proposals from almost unbelievably small particles to huge membranes that may envelope our Universe ultimately leading to us to wholly new realms of understanding. Webb makes these strange and wonderful goings-on accessible, engaging and enjoyable .

" Webb helps readers understand what s involved by defining the concepts of symmetry and space-time . Webb presents these ideas so that even nonspecialists can grasp the basics of topics as esoteric as alternative dimensions and particle physics. "Webb s latest book is a look at strings and other things that might underlie the structure of the Universe. Unlike other books this one manages to take on the subject in a truly accessible way . it is perhaps the best introduction available at this level of the subject." (Richard Wentk, Focus, September, 2004) "This book explores colliding universes, branes, strings and other wild ideas of modern physics. It is aimed at the non-mathematical reader. The style is lively and engaging.

Webb, employed by the Open University in the U.K. has a bright and breezy style, which enlivens the most tortuous of subject matter. Highly recommended as a layman s non-mathematical introduction to some of the weirdest physics around, the book is complete with a necessary glossary and bibliography, with recommended further reading." (Roger Feasey, Journal of the Auckland Astronomical Society, June, 2005) "Stephen.