Pi, which is the ratio of a circle's circumference to its diameter, is celebrated with its own holiday on March 14.

Seventy-year-old T Michael Harty of Maple Grove, Minnesota made his senior citizen contribution to Pi Day this year by ...

Pi is part of Egyptian mythology Egyptians believed that the pyramids of Giza were like math marvels, built on the principles ...

In honor of it being National Pi Day Friday, students at Rochester Prep celebrated by trying to memorize as much of the ...

Pi Day rolls around every year on March 14. It is observed on March 14 because 3, 1, and 4 are the first three significant ...

Ladies and gentlemen, get ready to get your nerd on. Know what today is? It's Pi Day. What's that you say? Why, it's March ...

In honor of Pi Day, the account for StarTalk, Tyson's talk show and now podcast, shared an impressive video of the renowned astrophysicist's son reciting the first 100 digits of Pi from memory.

Friday we will observe the first of the two spring geek holidays. Yes, I said geek, not Greek. Pi day will be here before we ...

In celebration of Pi Day, students at Rochester Prep who can most accurately recite the most digits of "Pi" or “π," got the chance to "get even" with their teachers by throwing a whipped cream pie in ...