Pi is an irrational number, meaning it has an infinite number of nonrepeating decimal places. But it turns out, NASA scientists need only a small slice of pi — the first 15 decimal places — to solve ...

Most of us can recall Pi to four or five digits, thanks to high school math, but now a team of Swiss scientists has broken the world record for calculating the mathematical constant. It took three and ...

When Ainsley Ramsey was in sixth grade she competed in a contest: Who could recite the most digits of pi? Ramsey was determined. "I did 100 digits and I won. And I remember getting a pie to bring to ...

After thousands of years of trying, mathematicians are still working out the number known as pi or “π”. We typically think of pi as approximately 3.14 but the most successful attempt to calculate it ...

Depending on your philosophical views on time and calendars and so on, today is something like the 4.5 billionth Pi Day that Earth has witnessed. But that long history is nothing compared to the ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. When I ...