Happy Pi Day!

Today is Pi Day, where all math geeks in the world pay respect to the number which shows up in circles, physics, Gaussian probabilities, and many other random things in nature. Take a little time to reflect today on what pi has done for you in your life (aside from the many headaches in math class). Apparently to honor Pi Day, the A9.com search engine (appropriately enough available at A9.com) is offering (pi /2)% discounts on purchases. So if you need to buy something from Amazon, head there now before the discount ends.

Mathematicians will now take a few months off, waiting for the next big holidays that include Pi Approximation Day (July 22, or 22/7 in European format), and waiting for Avagadro's Moment (6:02 on 10/23).