Every year on March 14, millions of people celebrate Pi Day. This fun holiday honors Pi, the number (3.14) that represents the ratio of a circle's circumference to its diameter. And this year, ...

Which brings us to a titillating quote by American engineer and author Paul J. Nahin: “If π weren’t around, there would be no round pies.” ...

March 14 circles back on the calendar, and Pi Day gives Americans a reason to smile at math instead of stress over it. What ...

Math enthusiasts know all about it, and the rest of the population is probably hoping for cherry pie. But March 14 is Pi Day. While last year stretched the symbolic celebration out a little longer -- ...