Wow! This book really kept me on my toes. I think I read the last half in one go because I couldn't stand to put it down without knowing what happens next.
I'm a huge sci-fi fan and this is unlike any I've read yet. It has the spirit of sci-fi, full of wonder, and imagination, but is light on the sci-fi jargon and easy on the intense discussions of scientific morality and ethics. A great book to pick up in the summer, even if you aren't usually a sci-fi reader.