What is sex? Has it always existed? What purpose doesit serve? Why are there penises and vaginas? These questions are at the verycore of Dirty Biology, an erudite (and hilarious) graphic novel that aims toteach you everything you wanted to know about sexï¿9;and thensome."Sex" can mean a number of things. It canrefer to sex organs, to sex types, to the act of copulation, or to the simpleexchange of genetic material. This book explains what we actually mean when wetalk about sex and reveals a wealth of astonishing scientific details along theway. For example, did you know that some species can have sex without genitals? And when it comes to genitals, did you know that there's an amazing diversity ofthese across species? From the evolution of penises and vaginas to far-fetchedmating rituals and the shocking consequences of the sex act, Dirty Biologyexposes sex for what it is: a lot more interesting and more complicated than thesimplistic image we often have of it. | Dirty Biology: The X-Rated Story of Sex by Leo Grasset, Paperback | Indigo Chapters