Today’s the day to celebrate pi, perhaps with a slice of pie? It’s Pi Day, the annual celebration of π (pi), the ratio of a circle’s circumference to its diameter. The numerical version of this is ...

To celebrate Pi Day, CPK is offering rewards members a $3.14 pizza with a minimum purchase of $25 on March 13 and 14. Choose ...

Pi day is Friday, March 14 and you can get special food deals on pizza and desserts from several national chains.

Instead of the usual $3.14 specials, The Plano, Texas-based pizza chain asks fans to strut their creativity with ...