Today is Pi Day, where we celebrate both "π" and "pie." Glen Whitney, executive director of MoMath, discusses the mysteries of 3.14.... Plus, since we are never ones to let a good homonym pass by, we'll also talk about "pie." Do you see an intersection between math and baking? How do you plan to celebrate Pi Day? Call us at 212-433-WNYC, or 212-433-9692, or leave a comment here.