(CBS News) Pi Day is upon us and Ford Motor Company is celebrating the mathematical constant by launching a math challenge on the link-sharing site Reddit. "Starting today at 11 a.m. EDT, Ford Fusion ...

In 1655 the English mathematician John Wallis published a book in which he derived a formula for pi as the product of an infinite series of ratios. Now researchers, in a surprise discovery, have found ...

Mathematician Carlos Castillo-Chavez says that pi is so important to math that using its simple, geometric definition denies its greater powers. "[Pi] brings you into the world of mathematics, which ...

Come spring, everyone's a joker about math. That's because every March 14 — 3.14, that is — is Pi Day, so named for the set of numerals that make up its date. Sure, pi is technically the ratio of the ...

Tomorrow is March 14, a.k.a. Pi Day. Regrettably, this isn't an official national holiday (yet). But it is a holiday that will be celebrated all over the Internet. I was surprised to learn that one of ...

Conversations about understanding maths in modern life continue long after Pi Day – whether you celebrated it or not. Each year on 14 March, classrooms, cafés, and science centres buzz with number ...