The "Sync" is out there - Rated 
To put it briefly, "Sync" discusses exciting and original ideas in a very enjoyable manner (Strogatz is a natural!). Readers that like Popular Science will love it.
The subject is described by the subtitle: "The emerging science of spontaneous order".
From complex forms of life (human beings and our heartbeat or our sleeping cycles) to simpler ones (fireflies that synchronize their flashes in densely verdant environments so that they can attract their match), sync appears to be playing an important role.
Interestingly, it does so in inanimate things as well: London's Millennium Bridge almost collapsed because of a synchronizing feedback loop between pedestrian stepping and the bridge's swaying. The idea in fact penetrates a range of scientific areas: The quantum world, chaotic systems (systems ruled by a vast number of parameters). Even Small Worlds (networks structured in neighbourhoods so that each node distances from any other by at most 6 links. Social networks is an example, yes you are most probably just 6 people away from president Obama!).
Some chapters (few) are quite difficult to follow. If you find yourself in this situation, just read them fast or jump to the next chapter, they are independent. And from the Pop Sci point of view the easy ones contain the most fascinating ideas.
Simply the best - Rated
This is beyond doubt one of the finest books I have read in recent years. It is obviously not intended as an easy read but the author has dealt with some extremely difficult concepts with such clarity that the effort in reading is more than amply rewarded. When dealing with concepts which are outside or normal scope of experience has provided analogies from everyday life that ease you into understanding.
I would gladly recommend this book to anyone who is interested in what goes on behind the closed doors of complex mathematical research.
A superb read. - Rated
Inspiring, entertaining, fascinating. Sync is a real treasure trove for anyone interested in emergence, non-linear dynamics, networks and A-Life. It's great that he takes a fresh angle to this subject matter, and there are lots of anecdotes and examples that are not in any of the other popular books on these subjects. Definitely in my Top 10!
A wonderfully interesting book - seeing the world from a different viewpoint - Rated
This book and the ideas it introduces are rather like going skydiving for the first time. Thrust into a whole new world of knowledge it is at first unnerving, later exhilirating, and then enthusing and encouraging. It gives you a different view of the world from which you will never quite recover. The writing is both clear and erudite, uncluttered with jargon and wonderfully informative. I highly recommend this book to anyone who likes to see things just a little bit differently from the masses.
Utterly fascinating - Rated 
Whilst the book lacked some cohesion and a decent conclusion much of the information was fascinating. I especially enjoyed the section on sleep cycles.
The book takes the reader gently through several areas where synchronisation occurs and explains the research and modelling people have done in those areas. Its a very gentle read and my 10 years since I did maths a-level brain found it easy enough to understand, and thought there was room for more detail on the actual maths side.
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