Did you know there are holidays for almost everything? While the U.S. may have 11 official federal holidays, there are actually thousands of quirky, themed days that make the calendar a whole lot more ...

Private investigator Mike LaCorte joins WIRED to answer the internet's burning questions about the profession of private investigator. How often are the people they're hired to watch cheating on their ...

Pi is denoted by the Greek letter π. It is a mathematical constant and is approximately equal to 3.14159. It is defined as the ratio of a circle's circumference to its diameter. It was first ...