Friday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its ...

March 14 — a day you’re more likely than most others to eat — or throw — a pie and get a reduced price on your pizza. It’s ...

Pi is an irrational number, and like some irrational people it just goes on and on. What is it with this crazy, crucial ...

Mathematician Dr. Steven Strogatz breaks down the history of the math concept and brings it full circle to recent science.

Pi Day celebrates curiosity, creativity, and, let’s face it, carbs! Indulge in pies, explore math trivia, or bake ...

Pi belongs to a huge mathematical group called irrational numbers, which go on forever and cannot be written as fractions.

Fortunately, July 22 is an alternative “Pi Day” because 22/7 is actually a slightly better approximation of 3.14159265... than is 3.14. July 22 is sometimes referred to as “Pi Approximation ...