Start the spring with an organizational project.

Prefer Newsweek on Google to see more of our trusted coverage when you search. March 14 is also known as National Pi Day—a celebration of the mathematical constant π (pi). For many, it has become a ...

Looking for a slice of hapPIness? Celebrate Pi Day this weekend! Each year, Americans celebrate the Greek symbol of Pi on March 14 because the date matches the first three numbers, 3.14. The annual ...