Holidays are a good time to find the answer to complex mathematical problems using household items, MacGyver-style. One way to find pi (yes, that pi) involves a flat surface, a little twig or pin, and ...

Add Yahoo as a preferred source to see more of our stories on Google. Celebrate Pi Day and read all about how this number pops up across math and science on our special Pi Day page. Grab something ...

Happy Pi Day! Isn't Pi Day one of the best holidays all year? For last year's Pi Day, I determined a value of pi without even using a circle. How can you top that? I can top it by using pi to find pi.

It is once again Pi Day (March 14—which is like the first digits of pi: 3 and 14). Before getting into this year's celebration of pi, let me just summarize some of the most important things about this ...

Add Yahoo as a preferred source to see more of our stories on Google. For more than two millennia, mathematicians have produced a growing heap of pi equations in their ongoing search for methods to ...

Here's a funny story. 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 ...

It's Pi Day, the day regular people gawk at the brilliance and beauty of a mathematical constant. We focus on why pi still captures our imagination thousands of years after it was first calculated.