Pi Day, 2010

Pi Day is even in the cable news this year. A CNN article honors the event:

On Pi Day, one number 'reeks of mystery'

By Elizabeth Landau, CNN

Sunday is Pi Day, on which math geeks celebrate the number representing the ratio of circumference to diameter of a circle. Sunday is Pi Day, on which math geeks celebrate the number representing the ratio of circumference to diameter of a circle.

(CNN) -- The sound of meditation for some people is full of deep breaths or gentle humming.

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Also Google honors the special day with a special logo:

A curious symmetry in Pi. Source: http://imgur.com

This year, piday happens on a Sunday and no pi-eating contest takes place. Luke Anderson, gave again his Mathtable talk: "A Slice of Pi": Pi is a number surrounded by a timeless intrigue -- we've been chipping away at its mystery for about 4000 years now. We will follow the ratio's history through selected stories of its approximation and interpretation, both successful and misguided. We will encounter pi in culture, religion, and American history, to name a few, and touch upon the quirky modern fixations that swirl around it.