(NBC) - Happy Pi Day! The annual celebration, held every March 14, is your chance to pay tribute to the most famous constant in math and physics: the number you get when you divide the ...

Pi is an introduction to the extraordinary mystery of math, say some. Others say pi is not special and needs to be reformed.

The proof that the Apéry constant is irrational remains one of the most bizarre events in the history of mathematics ...

But some contend that replacing pi with a different mathematical constant could make trigonometry and other math subjects easier to learn.

Pi Day is an annual celebration held on March 14 that pays tribute to the most famous constant in math and physics. Here are some facts about pi.