March 14 marks Pi Day, an annual celebration of the mathematical sign pi. Founded in 1988, March 14 was selected because the numerical date (3.14) represents the first three digits of pi, and it also happens to be Albert Einstein’s birthday. In honor of Pi Day, bring in your favorite pie (homemade or store bought) to the ESC Cafe at any time on Tuesday, March 14th. Sign up here to bring a pie!