Robots fight and workout at RoboGames 2015

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Robots of all sorts have gathered at RoboGames 2015, which kicked off in San Mateo, just south of San Francisco on Friday. While some fought, bumped and cut each other up, other robots worked out, lifting make-shift barbells. Featuring combat-bots, humanoids, hockey-playing cyborgs, and even kung-fu fighter machines, RoboGames 2015 is hosting delegations from 38 countries. Now in its eleventh year, the event runs from April 3 to April 5.