Today marks National Pi Day in the United States and around the world. The holiday commemorates a timeless symbol beloved by many in mathematical and scientific communities, while making the most of ...

Friday is Pi Day, a national celebration of the mathematical concept, which is the ratio of a circle's circumference to its diameter and equals 3.14... Schools and museums often plan events to ...

An annual celebration of the mathematical constant pi — known as Pi Day — originated in the Bay Area in the late ’80s, when ...

Did you know there are holidays for almost everything? While the U.S. may have 11 official federal holidays, there are actually thousands of quirky, themed days that make the calendar a whole lot more ...

Every year on March 14, people all over the nation celebrate Pi Day. The day honors the mathematical concept of pi -- the ratio of a circle's circumference to its diameter that is approximately equal ...