Pi is an infinitely long, irrational number and its exact value cannot be known. Pi Day celebrates the mathematical constant Pi, and is significant for those who love mathematics and deal with ...

Pi Day was first celebrated in 1988 at San Francisco's Exploratorium, a museum of science and technology that encourages visitors to be hands-on.

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

A 10-year-old British boy celebrated the run-up to the math-themed holiday Pi Day by breaking a world record for the most ...

PENNSYLVANIA, USA — Monday, March 14 is recognized as National Pi Day, where math enthusiasts and pie lovers come together to celebrate the ratio of the circumference of a circle to its diameter ...

Periwinkle's Bakery on Broadway will have its full pie menu for special order on March 14 and a variety of 9-inch deep dish ...

Exploratorium employees say this year’s Pi Day — the annual March 14 celebration honoring the number and its associated Greek ...