Noting a colleagues DNA, inspired tattoo at a pool party, science writer Zimmer wondered how widespread the phenomenon of the inked scientist was. Divided into 13 sections, the book is filled with photos accompanied by grounding texts - Portuguese geneticist Dônovan Fereira Rodrigues, who got Isaac Newtons shoulders of giants quote inked on his back, tells the story behind the phrase; August Kekules discovery of benzenes structure inspired Virginia pharmacology PhD. Jeffrey Ikeda; a tattoo of Nikola Teslas visions of a wireless future lies on the arm of Abraham Orozco, the science director of a childrens community center in L.A. Genetics, neuroscience, and evolution (Darwin gets his own section).