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:
Clara Moskowitz is Scientific American's senior editor covering space and physics. She has a bachelor's degree in astronomy and physics from Wesleyan University and a graduate degree in science journalism from the University of California, Santa Cruz.