What's in a leap year? Eternal youth, wedding bells and tech bugs

Every four years, the calendar grants us an extra day, known as February 29. Leap years, introduced by the Gregorian calendar in the 16th century, add an extra day to keep us in sync with the seasons. Leaplings, born on this rare day, celebrate unique birthdays. The Earth takes around 365.2422 days to orbit the sun each year, and...