This book totally changed my whole attitude to food and the food industry. It politicized my thinking and reinforced my adoption to vegetarianism (although he does mention meat, but subscribes to it's limited consumption). The recipes within are excellent and the photographs superb. It seems that every library that has ever stocked it has had their copy stolen - it is such a great book.
"Future Cook" (that's the UK title of this book which was also published under the title "Future Food" in the U.S.) was one of Tudge's first books but still relevant. He makes a compelling argument that we need to change the relative ratio of types of food in our diet, e.g. using meat for flavor and minor nutritional contributions rather than to supply a large proportion of our calories and protein needs. Not a cookbook but a book that is likely to change how you cook.