"If you've got a cold, take zinc. It can reduce the length of your cold by two and a quarter days. That's pretty good," Dr Khan told host Christine Lampard. The advice comes from a study ...

For a start, there’s the 365-and-a-quarter days it takes the Earth to orbit the sun. Then there’s the 24 hours that make up those days and the 60 minutes and seconds which fill each and every ...