Pi Is Very Old

Each year, the 14th of March is celebrated by scientifically-minded folks for two good reasons. First, it's Einstein's birthday (happy 135th, Albert!). Second, it's Pi Day, because 3/14 is the closest calendrical approximation we 

Each year, the 14th of March is celebrated by scientifically-minded folks for two good reasons. First, it's Einstein's birthday (happy 135th, Albert!). Second, it's Pi Day, because 3/14 is the closest calendrical approximation we 

The number pi = 3.14159265358979323846 is arguably the only mathematical topic from very early history that is still being researched today. The Babylonians used the approximation pi ≈ 3. The Egyptian Rhind Papyrus, dated to roughly 1650 BCE, 

(CNN) — March 14 is my favorite day to be a nerd. Across the country, math geeks in museums, schools, private groups and elsewhere gather to celebrate the number pi, approximately 3.14. That's why March 14 — 3-14 — is Pi Day. What's more, Albert

A reporter at National Geographic wanted to find someone to interview about pi—that number you learned in grade school that is the ratio between a circle's circumference and its diameter. So the reporter thought, I wonder if there's such a thing as a