Masters of Time

The idea of controlling time - being a "time lord" - is an attractive one, as our lives become ever busier. But is it really possible that one day, perhaps by travelling at the speed of light, we may be able to walk with dinosaurs or visit our yet-to-be-born descendants? Narrated by Jeremy Vine , this final part also looks at the possibility of buying more time and living longer, and asks whether the humble worm holds the secret to eternal life.