Your chance of being born on leap day is less than 0.1%, yet when the TODAY show put out a call for leapers (people who were born on Feb. 29), we received over 1,000 responses ... and 23 leapers ...

Short answer: Every four years, in the same years as American presidential elections and summer Olympics. Longer answer: Almost, but not quite, every four years. Need a news break? Check out the all ...

Thursday is a leap day, the rare date of February 29 that's added to the calendar nearly every four years. That means the roughly 5 million people worldwide born on that day — aka "leaplings" — will ...

Feb. 29 is a date that happens only once every four years, but what are leap years? Why do we need them? And how did they come about? Leap years are years with 366 calendar days instead of the normal ...

Earth's slower rotation may mean that universal time will have to skip a second for the first time ever, researchers have found. As climate change escalates the melting of ice caps and rising sea ...