Pi’s ancient roots: Egyptians and Babylonians used pi over 4,000 years ago, long before it was named in the 18th century.

WEST PALM BEACH, Fla. (AP) — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite number ...

WEST PALM BEACH, Fla. — Math enthusiasts around the world, from college students to rocket scientists, celebrate Pi Day, which is March 14 or 3/14 — the first three digits of an infinite number with ...