A minute has 60 seconds, right? Not tonight! @drtomcrick & @chrisenorth explain #leapsecond
Jun 30, 2015, 10:09 AM
Surely we can't just go about adding a second to time? And why would we do it anyway? Dr Tom Crick and Chris North tell Oliver Hides on Good Morning Wales why its happening tonight - and also explain how things like earthquakes can knock our planet 'out of sync' with the sun.