Thursday marks Pi Day, otherwise known as 3.14, which is the ratio of a circle's circumference to its diameter. While the average person can easily remember the rounded 3.14 ratio, the exact ratio has ...

Hungry for Pi? Check out NASA's Pi Day challenge and put your wits to the test solving problems just like NASA scientists and engineers. When you purchase through links on our site, we may earn an ...

Math enthusiasts around the world, from college kids to rocket scientists, celebrate Pi Day on Thursday, which is March 14 or 3/14 — the first three digits of an infinite number with many practical ...