Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

Uncover the surprising connection between Ramanujan's pi formulas and the universe. Learn how his century-old math helps explain turbulence, black holes, and more.

This day only comes 'round' once every year!

Student mathematicians spent Saturday crunching numbers and solving equations at Maria Carrillo High School’s library as part ...

Thursday marks Pi Day, otherwise known as 3.14, which marks the ratio of a circle's circumference to its diameter. While the average citizen can easily remember the 3.14 ratio, the exact ratio ...

Today math -- and dessert -- lovers will revel in Pi Day celebrations across the country, vying to recite the most digits, do their best impressions of birthday boy Albert Einstein and bake the most ...

Mountain Mike’s Pizza is celebrating Pi Day with a tasty equation: loyalty members who buy a medium pizza can add a one‑topping medium for $3.14.

Today is Pi Day. You know, March 14. 3/14 is sort of like 3.14. Get it? OK, it's a bit of a stretch because 3/14 looks like a fraction and not Pi. Whatever. We still call it Pi Day. Even if the date ...