Firstly thank you to Netgalley and The Experiment publishers for the ARC ebook of this book.

This book is beautiful. Kupferschmidt has travelled the world in search of answers as to why the colour blue is so rare and special in nature. The answer - science.

The book takes the reader through the history of the colour blue, starting with it's original sources from rocks through to manufacture of blue dyes, the science behind how we see the colour blue, why and how plants and animals are certain colours.

Whilst main focus of the book is the colour blue, there is a lot of background on how light interacts with molecules to allow us to see certain colours as well as an overview of how our eyes work.

I thoroughly enjoyed this book and found it extremely informative, but many readers may find this too textbook like. It certainly helps having a scientific background.

This is definitely a book that is aimed more towards a specialist audience than the everyday reader.

I did also find that some of the topics jumped around a little too erratically at some points, making it difficult to follow at points.

Overall, a great introduction to the science of colours and perfect in print or ebook format so that the wonderful pictures can be enjoyed.

I requested this book because I was sure there'd be excellent photographs, and while I wasn't wrong, I found a lot of informative text as well. This is a well thought out dive into the color blue as it's found (or more often, isn't found) in nature. I enjoyed this scientific text.