Stephen Johnson is Senior Staff Writer for Lifehacker where he covers pop culture, including two weekly columns “The Out of Touch Adults’ Guide to Kid Culture” and “What People are Getting Wrong this ...

How did Pi Day get started? Every March 14 we gather our loved ones to crack pi day jokes, take advantage of Pi Day deals and celebrate Pi Day, a holiday dedicated to…what is pi exactly? The short ...

March 14—aka Pi Day—isn’t just for math nerds. It’s the one day a year where we celebrate the magic of the number π (pi), which starts at 3.14 and goes on forever. But Pi Day isn’t just about ...

Test yourself on math's most famous constant with this pi quiz. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. On March 14 mathematicians ...