College students, rocket scientists and math enthusiasts around the world are celebrating Pi Day. The holiday on March 14 — or 3/14 — correlates to the first three digits of the infinite number.

Sure, it's a nod to 3.14, the never-ending number that describes a circle's circumference, but the reason people show up for it each year isn't because they're

Pi Day is March 14. Plenty of restaurants and pizza shops are offering deals for cheap or free pizzas and pies. Even more have deals for $3.14. As you sat in elementary school or junior high and your math teacher began introducing algebraic terms to your vocabulary,