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Guardian Unlimited
London Book Review
American Scientist
Curled Up

Michio Kaku

Parallel worlds

Science fiction presents us with many wacky ideas, and you may wonder whether they have any connection to reality. Well in this book Michio Kaku describes plenty of ideas which seem like fiction but have been given serious consideration by physicists, for instance wormholes, warp drives and time travel. The book is in three parts, starting with a look at the current state of cosmology which is followed by a look at various ideas in physics related to parallel universes. The final part considers how we might reach such a universe. The book is easy to read, and is recommended to anyone wanting to find out more about the strange ideas from science fiction.

However it is a long book and I do think that the readers are presented with too many different ideas to get them clear in their minds. For instance 'Parallel Worlds' may refer to (i) Universes budding off our current one, (ii) Higher dimensions in physics (branes and the like) or (iii) Many worlds quantum theory. Many books fail to distinguish between these, and I hoped that this would do better, but I don't feel that it did. So the book is fine as an inspirational overview of the area, and a must for prospective sci-fi authors, but I would advise a reader wanting a starting point to study the physics to look elsewhere.

Amazon.com info
Paperback 448 pages  
ISBN: 1400033721
Salesrank: 53069
Weight:1 lbs
Published: 2006 Anchor
Amazon price $11.21
Marketplace:New from $5.97:Used from $1.51
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Amazon.co.uk info
Paperback 448 pages  
ISBN: 0141014636
Salesrank: 25998
Weight:0.62 lbs
Published: 2006 Penguin
Amazon price £10.98
Marketplace:New from £5.58:Used from £0.50
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Amazon.ca info
Paperback 448 pages  
ISBN: 1400033721
Salesrank: 111292
Weight:1 lbs
Published: 2006 Anchor
Amazon price CDN$ 20.80
Marketplace:New from CDN$ 13.55:Used from CDN$ 1.46
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Product Description

In this thrilling journey into the mysteries of our cosmos, bestselling author Michio Kaku takes us on a dizzying ride to explore black holes and time machines, multidimensional space and, most tantalizing of all, the possibility that parallel universes may lay alongside our own.

Kaku skillfully guides us through the latest innovations in string theory and its latest iteration, M-theory, which posits that our universe may be just one in an endless multiverse, a singular bubble floating in a sea of infinite bubble universes. If M-theory is proven correct, we may perhaps finally find answer to the question, “What happened before the big bang?” This is an exciting and unforgettable introduction into the new cutting-edge theories of physics and cosmology from one of the pre-eminent voices in the field.