Hubbell's book is fascinating and absorbing. I loved the cogent explanation of ginger/not-ginger cat genes in the formation of calico cats. I liked the section on apples too, though Hubbell's description of John "Johnny Appleseed" Chapman diverges wildly from other sources I remember reading long ago. I'm more than half-tempted to pursue that story... All in all, a lovely, compact treatise on how homo mutabilis (as she dubs us) interacts with its world.