It may be possible to develop a new form of male contraceptive after researchers in Edinburgh identified a critical gene for the production of healthy sperm.

A new NHS patient rating system - known as the "friends and family test" - is to be introduced to help improve nursing care in England.

Patients in England will be asked if they would recommend the hospital they were treated in to friends and family, to help improve nursing care.

Destination London's Paddy O'Connell finds out how London's Air Ambulance Service will provide critical care during the Olympics.