'...The tale of the crown-of-thorns appears in his meticulously reserached blow-by-blow account of his quest in What Is Natural? The result? The best science whodunnit I have ever read...This fascinating book includes thumbnail sketches of a couple of generations of marine scientists, and a wonderful, detailed account of the environmental movement's growing pains...Apart from being a damned good read, What Is Natural? is a poignant history of humanity's most troubled times.'