Robots in step

Robot developers showed off more than 60 of their latest creations at the Prototype Robot Exhibition at Aichi World Expo, which started June 9 and ends June 19, in Nagakute, Japan. The robots aren't quite ready for everyday use--but they may offer a glimpse of what we'll be taking for granted someday.

Here, a man dances with two "partner ballroom dance robots," or PBDRs, created by the robotic venture Nomura Unison.

Credit: Junko Kimura/Getty Images

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