Happy Pi Day! Today's date is March 14, or 3.14, the first three digits of pi, and that's equal to the ratio of the circumference of a circle to its diameter.
This is a special day for math geeks to revel in the glory of pi. Ain't it grand? And to celebrate Albert Einstein, whose birthday is today too.
Celebrations for the enigmatic number -- which never ends and never repeats -- are many and usually pie-related events including: pie-throwing contests, pie-eating contests and pie-give-aways.