What can I say? Well if you know Douglas Adams' work and are picking this up for his writing style, you have made a good choice. If you don't know about him, but want to inform yourself a little about our impact on our fellow earth species and incredible efforts of a handful to reverse that impact, you have made a good choice.
I never knew, such an important and potent topic can be written in such an easy style. You pretty much laugh your way through the book, but miraculously, you are very much made aware of the reason why this book was written. You do appreciate the comical style, but you are left pondering over the irreversible damage we have made and deeply.