Munroe has a blog entitled "What If?", where he has answered questions sent in by fans of his comics. These questions are usually absurd and related to math or physics, and he explains them using both his knowledge and various academic sources. In 2014, he published a collection of some of the responses, as well as a few new ones and some rejected questions, in a book entitled "What If?: Serious Scientific Answers to Absurd Hypothetical Questions". Starting in November 2019, Munroe began writing a monthly column in the New York Times titled "Good Question", answering user submitted questions in the same style as "What If".