The 288-page hardcover presents the best of the sites' tattoo submissions and is divided into 13 chapters, which include astronomy, math, chemistry, evolutionary biology, neuroscience among others. But it's more than just tattoo photos. The tattoo images are accompanied by insightful text from the renowned science writer that speaks to the subject of the work as well as the collectors' stories.
Publisher's Weekly offers more on Zimmer's own story behind the book:
"Noting a colleague's DNA-inspired tattoo at a pool party, science writer Zimmer (A Planet of Viruses) wondered how widespread the phenomenon of the inked scientist was. He solicited pictures for his blog, The Loom, and, inundated with photos and stories from scientists and laypeople alike, quickly became a curator of science-inspired body art. Mary Roach's foreword lays out why, given the passion with which so many approach their fields, it should be no surprise to encounter this worldwide tribe whose obsessed love for every far-flung corner of science's domain was marked permanently on their bodies."
For a peak inside, check this slideshow of tattoos on The NY Times site as well Flavorwire's blog post and The Atlantic.
My one criticism of Zimmer's blog and the book is that not all the tattoos presented credit the tattooist. I hope that this will change on the site to complete an otherwise great project.