On Thursday, Detroit celebrates 313 Day in honor of its iconic area code and many restaurants celebrates with $3.13 deals. Friday marks March 14, also known as Pi Day in the mathematical world ...

Pi Day itself dates to 1988, when physicist Larry Shaw began celebrations at the Exploratorium science museum in San Francisco. The holiday didn’t really gain national recognition until two ...

It would be another 30 years before the United States House would pass a resolution officially recognizing March 14 as National Pi Day. Pi, of course, symbolizes the ratio of a circle's ...