Randall Patrick Munroe (born October 17, 1984) is an American cartoonist, author, and engineer best known as the creator of the webcomic xkcd. Munroe has worked full-time on the comic since late 2006. In addition to publishing a book of the webcomic's strips, he has written four books: What If?, Thing Explainer, How To: Absurd Scientific Advice for Common Real-World Problems, and What If? 2. Source: Wikipedia (en)