Pi Day: Restaurant deals centered on 3.14

LAS VEGAS (KLAS) - Years ago, the infinite decimal 3.14 or its Greek symbol pi was mostly known to math and science geeks, but now March 14 is also a day for tasty deals.Here's a little history to whet the appetite.The first "Pi Day" celebration was held in San Francisco in 1988 when a physicist at the Exploratorium, a science museum, started the tradition of celebrating the number with fellow employees at the science museum. Since then, the celebration has grown, and the symbol pi has evolved.