article_snippet: Pi Day started 27 years ago at San Francisco's Exploratorium.
article_snippet: Physicist Larry Shaw, who worked in the electronics group at the museum, started celebrating pi on March 14, 1988, primarily with museum staffers.
article_snippet: The tradition has grown to embrace math enthusiasts from all walks of life.
article_snippet: This year, San Francisco's Exploratorium San Francisco's Exploratorium is hosting a day-long celebration at San Francisco's Exploratorium facility on Pier 15, including a Pi Procession, servings of pie and a pizza pie dough-tossing event.
article_snippet: In Princeton, New Jersey, where Albert Einstein's lived for more than two decades, signs of the scientist permeate the Pi Day festivities, from birthday parties at the Historical Society of Princeton to an Albert Einstein's lookalike contest.
article_snippet: Plus the requisite pie-eating, pie-throwing and pizza pie creation.
highlights_snippet: San Francisco's Exploratorium and Princeton, New Jersey, go all out .