rupert wingfield hayes in yokohama, japan. leader in robotics, but not only are they greeting guests at hotels or seven feet are restaurants, they are also transforming the medical industry. as part of our leading cities series, mariko oi visits a very special operating theatre. is this the future of surgery? this smart cyber operating theatre connects medical devices together and consolidates the information in real—time, helping surgeons make critical decisions. japan is already a world leader in robotics. the industry is currently worth $5 billion. at this nursing home, 16 different types of robotics, from nursing aides to rehabilitation devices support the residents' well—being and care. this baby seal, inspired by animal therapy, can respond to temperature, touch, and sound. it is being introduced in countries around the world. what kind of impact can you see residents seem happy to interact with pepper, a humanoid robot able to recognise some emotion. as the country faces an ageing population, there is a shortage of care