Eighteen chapters by 18 authors, many of them heavyweights. The treatment is what you would expect from the New Scientist - that is to say, straightforward and pitched to the intelligent and scientifically literate layman. Yet somehow the book is less than the sum of its parts. Because each chapter is written in a different style, and with a different rhythm, the book fails to tell a story, and despite the work of the editor, it is inevitable that there is overlap in content between one chapter and the next, and some gaps. I much preferred James Gleick's "Chaos," which, though written in a rather breathless voice, still tells a more coherent and entertaining tale. One of the things I liked most about the New Scientist guide was the tiny BASIC routine. Now if only I still had QuickBASIC on my computer...