Google celebrates Pi Day with a special easter egg

Today is Pi Day! The date, March 14, corresponds with the mathematical constant π (or pi), which represents the ratio of a circle’s circumference to its diameter. Worldwide, math lovers are celebrating by baking pi(e)s and reciting as many digits of pi as they can remember.

How pi can you go? Search is serving up a slice of fun for → — Google (@Google)  
Google is getting in on the fun to help you do that last one, with a limited-edition easter egg appearing in its search engine. To access it, just search “calculator” or a mathematical equation, such as “3 +4”. A calculator module ...