The figure 3.14, or π, can go on forever. The most accurate value for Pi, according to Guinness World Records , is more than 62 trillion digits (62,831,853,071,796 to be precise), calculated in August ...

Several national retailers are offering Pi Day discounts and special deals on March 14 to celebrate the mathematical holiday.

Paramount Pictures made a savvy plug for “Novocaine,” and Dick’s Sporting Goods was a “magnet” for holiday shoppers—plus, why ...