Why Do We Have Leap Years?Leap years occur every 4 years to keep the Earth’s calendar aligned with the number of revolutions it takes around the sun.

More From CBS Detroit

Best Places To See Indie Rock In DetroitIt's called Detroit Rock City for a reason.
Guide: Best Barbecue In Metro DetroitSometimes, nothing hits the spot like good barbecue.
Best Ice Cream Shops In Metro DetroitIt's getting warm outside! Take advantage of it.

Watch & Listen