MADRID, May 2 (Xinhua) -- The 34th round of matches in La Liga comes after a chastening week for Real Madrid, while the physical efforts of the season have begun to catch up with FC Barcelona. Here ...

Sports may seem like fun and games, but for robots, they are also a trial by fire. In a controlled lab environment, a bipedal robot might walk perfectly on a flat floor. Put that same robot on a cross ...