This year is a leap year, meaning Feb. 29 was added as the 366th day on the calendar. Here's what to know about its meaning, ...

We'll have an extra day on the calendar this February, but don't get used to it. Here's when the next leap year is, and when ...

And what do the seasons have to do with it? We like our summers in July and our snow in December. Leap Year ensures it remains that way, explains Duke physics professor Ronen Plesser in this short ...