Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — ...

Several national retailers are offering Pi Day discounts and special deals on March 14 to celebrate the mathematical holiday.

Whether you’re a math enthusiast or just here for the deals ... But what exactly is pi, whose symbol is "π"? For starters, this never-ending, non-repeating number is fundamental to the world ...