For builders, holding heavy ceiling panels in place with one hand while standing on a ladder and driving in screws with the other is, quite literally, a pain. So a team at Nagoya University in Japan has developed a one-armed wearable robotic exoskeleton ( that takes the weight. After the builder has guided the panel into place, powerful motors and springs in the exoskeleton take over to help support it. The California Institute of Technology has filed a patent ( on an implantable lens that can switch its strength. Made of a light-sensitive polymer,
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