Visitors look at a robot at a company's booth during ICRA 2011 in Shanghai Monday. More than 900 researchers on robotics around the world gathered in Shanghai Monday to share their recent findings at the 2011 IEEE International Conference on Robotics and Automation (ICRA 2011). The event is organized by the Institute of Electrical and Electronics Engineers (IEEE). It’s the first time for China to hold the world's top conference of its kind, which will last from May 9 to 13. [Photo/CFP]