This is an interesting and non-mathematical introduction to quantum theory ("atoms and their constituents") and the general theory of relativity ("our picture of space, time and gravity"). These subjects are fiendishly difficult to understand, but Chown's use of many fresh explanations and analogies should help you get to grips with them. Chown has put in a great deal of effort to try and make these subjects as accessible as possible. As a result, this book has given me a much better understanding of these subjects - and far fewer headaches than the many other books, articles and documentaries I've encountered before.
At the moment, there's no free preview chapter on this site for the Quantum Zoo; but if you visit Chown's website at www.marcuschown.com, you can sample a free chapter before making a decision