WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite number with many practical uses. Many people will mark the day with a slice of pie — sweet, savory or even pizza.

From there a day of celebrating science and mathematics was born: Pi Day. More than three decades on and the day is celebrated worldwide, with the sharing of pi trivia, mathematical problems, and the baking of the most famous of circular deserts: the pie.