The Best Pi Day Pies and Celebrations

Reader-submitted photos of pi pies, pizzas and parties to commemorate the Pi Day of the Century

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The Pi Day of the Century occurred this weekend when the date, including the year—3/14/15—matched the first five digits of the irrational number pi (3.14159265...). To celebrate the once-in-a-century event, Scientific American readers baked pies, cooked pizzas, ran races, held parties, and even drove a car until the odometer read the first six digits. Here are the photos to prove it:

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Clara Moskowitz is chief of reporters at Scientific American, where she covers astronomy, space, physics and mathematics. She has been at Scientific American for more than a decade; previously she worked at Space.com. Moskowitz has reported live from rocket launches, space shuttle liftoffs and landings, suborbital spaceflight training, mountaintop observatories, and more. She has a bachelor’s degree in astronomy and physics from Wesleyan University and a graduate degree in science communication from the University of California, Santa Cruz.

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