Robots march to Expo tune

Robotics is producing some amazing innovations and the best of the best will be on display at Expo, from robots that cook and serve meals to those that help the disabled and warn intruders

After causing a sensation at the Aichi Expo in Japan five years ago, robots - in all shapes and sizes - are set to make a comeback at Expo 2010 Shanghai.

A collection of robots will turn out for the 184-day Expo, beginning on May 1. Their roles will range from cooking and serving meals for visitors and feeling pulses to detect possible ailments, to impersonating an ancient emperor and his imperial concubine.