Natures Building Blocks: An A-Z Guide To The Elements, is an outstanding book, and quite possibly the greatest science book I've ever read. It is filled with countless fascinating facts, such as why an octopus has blue blood and why some people can consume more than twice the lethal dose of Arsenic and live. It really is an excellent reference book for anyone interested in chemistry, biology, nutrition, medicine, or history, and you'll find yourself going back to it time and time again. It does get `slightly' scientific in places such as when it starts to talk about the various isotopes of an element, so some basic knowledge of chemistry is recommended. But it is not overly technical so it's not essential. The sections I enjoyed the most were the `medical elements' which I found extremely interesting. The book is very well structured and easy to follow. This is the kind of book that makes you feel smarter, a true joy to read and I recommend to all. No one could possibly be disappointed.