Dana Mackenzie, a Ph.D. mathematician turned science writer, has written for a variety of popular science magazine over the last 20 years, including New Scientist, Scientific American, and Discover. He has written two previous books for the general public. "The Big Splat, or How Our Moon Came to Be" was published by Wiley in 2003 and went on to be named an Editor's Choice for 2003 by Booklist magazine. He always felt a little bit guilty about writing a book with no mathematics in it, though, so he more than made up for it with his second book, a history of the 24 greatest mathematical equations. This book, called "The Universe in Zero Words" (because equations have no words in them!), was published by Princeton University Press in 2012 and has been translated into French, Greek, and Italian. The Italian edition was shortlisted for the Premio Asimov in 2017. When he isn't writing, Dana volunteers at his local animal shelter and plays chess. (He was twice state champion of North Carolina a very, very long time ago.)