March 14—aka Pi Day—isn’t just for math nerds. It’s the one day a year where we celebrate the magic of the number π (pi), which starts at 3.14 and goes on forever.

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. ... Video shows Anaheim police unleash hail of gunfire on man after chase.

Using just nine digits of pi, scientists can calculate the Earth’s circumference so accurately it errs by only about a quarter of an inch (0.6 centimeters) for every 25,000 miles (about 40,000 ...

National Pi Day: 3.14 things to know about pi this year Pi Day is celebrated annually on March 14 because the first three numbers of the mathematical constant are 3, 1 and 4 ...

But the most significant pi research might have come from the astronomer, Archimedes, around 250 B.C. His mathematical calculation showed that pi was "between three and one-seventh and three and ...