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What is Pi Day? Math, science, pies and more


A freshly decorated key lime pie sits on a counter in a busy bakery kitchen at Michele's Pies, Wednesday, March 13, 2024, in Norwalk, Connecticut. Math enthusiasts and bakers celebrate Pi Day on March 14 or 3/14, the first three digits of a mathematical constant with many practical uses. Around the world, many people will mark this day with a slice of sweet or savory pie. (AP Photo/John Minchillo)