Math teacher Marcus Hung squinted in mock concentration. "3.1415," he said before pausing dramatically and then smiling. "That's about it." Reciting the digits of the irrational number pi is not his ...

While building a simpler model for particle interactions, scientists made a sleek new pi. Representations of pi help scientists use values close to real life without storing a million digits. The ...

Celebrate Pi Day and read about how this number pops up across math and science on our special Pi Day page. For more than two millennia, mathematicians have produced a growing heap of pi equations in ...

There’s a formula for pi, so why not for pie (pizza pie)? Pizza–of which the round kind has an area of pi times radius squared–is among the world’s most beloved foods. Yet what constitutes pizza ...

Physicists are now using principles from quantum mechanics to build a new model of the abstract concept of pi. Or, more accurately, they built a new model that happens to include a great new ...