NEW YORK — Leap year. It's a delight for the calendar and math nerds among us. So how did it all begin and why? Have a look at some of the numbers, history and lore behind the (not quite) ...

PORTSMOUTH — Have you ever wondered how other calendars deal with the extra day associated with a leap year? Here's a quick guide to help you sort it all out. The Gregorian calendar The Gregorian ...

In a world where organizing a simple meeting can feel like herding cats, new research reveals just how challenging finding a suitable meeting time becomes as the number of participants grows. The ...

Every June, Birches Elementary School mathematics teacher Judy Rose challenges some of the school’s first, second and third grade students with a “Math Calendar” that they can complete over their ...