Feb. 29 has all sorts of myths and trivia associated with it, not to mention leaplings, those people born on the day.

It's not every year that you see February 29 on the calendar -- and it's not technically every four years either. Thursday is officially leap day. For some, its birthdate, or a day for special deals ...

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) every four year phenom ...