How robot carers could be the future for lonely elderly people

The film Robot and Frank imagined a near-future where robots could do almost everything humans could. The elderly title character was given a "robot butler" to help him continue living on his own. The robot was capable of everything from cooking and cleaning to socialising (and, it turned out, burglary). This kind of science fiction may turn out to be remarkably prescient. As growing numbers of elderly people require care, researchers believe that robots could be one way to address the overwhelming demand.