Tony Robinson uncovers machines that are the world's unsung heroes. From a vehicle that makes airport runways safe for landing, to the atomic clocks keeping humankind on time, these heroic machines save our modern lives from grinding to a halt. 

Tony Robinson leaps into the future to explore artificial intelligence.  From a humanoid robot that answers back, to the little workhorses that make next-day delivery possible; AI is ushering in a whole new generation of marvellous machines.