SAN FRANCISCO (KGO) -- Wednesday is Pi Day, where we celebrate the number 3.14, which stands for the circumference of any circle divided by its diameter.
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ABC7 News spoke to Chris Flink, the executive director of the Exploratorium, about why we celebrate and what they're doing to commemorate the day.
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More details on the event and the history of Pi Day can be found at the Exploratorium website.
