Pi Day

A celebration of that tasty transcendental number.

Kitchen Math: How To Eat π Pies

Methodically slice up four pies to reach the irrational number pi.

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How many digits can you recite?


Pi Day Mashup

It’s Pi Day (and Einstein’s birthday). Celebrate with this mix of tributes to the telltale Greek letter that symbolizes that endless number.

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SciFri Celebrates π

This year holds an unusually special treat for enthusiasts of the constant π: March 14, 2015 approximates π not just to the usual three digits (3.14) but to five: 3.14.15.

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