Do you expect to find articles about mathematics in your daily newspaper? If you are a reader of The Guardian, you do, or at least, you did during the second half of the 1980s. This volume collects many of the columns Keith Devlin wrote for The Guardian. Read them and assign them to your students to read. This is a book for delving in and is accessible to anyone with an interest in things mathematical. Devlin takes mathematical discoveries and explains them to the interested lay reader. The topics range from computer discoveries dealing with large prime numbers to much deeper results, such as Fermat's Last Theorem. You will find articles on the traveling salesman problem, on cryptology, and on procedures for working out claims for traveling expenses. Although the individual pieces are short and easily read, many contain references to mathematical articles and can form the basis for student research papers.