What is Pi Day, and why do we celebrate it every March 14? Here's what to know as math lovers around the world mark Pi Day.

What is Pi Day, and why do we celebrate it every March 14? Here's what to know as math lovers around the world mark Pi Day.

WEST PALM BEACH, Fla. — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite ...

Here's perhaps one of the most interesting facts about the number pi : This French luxury perfume house has a men's fragrance ...

What is pi? Pi (π) is a constant describing the ratio between a circle's circumference and its diameter. It is an irrational number usually summarized to two decimal places as 3.14.

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

WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite ...

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

College students, rocket scientists and math enthusiasts around the world are celebrating Pi Day.

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