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In fifty years, standard-issue supersoldiers will boast exoskeletons that make bullet-proof vests obsolete. In fact, at the rate researchers are figuring out bone synthesis, you could have an exoskeleton even sooner than that. Using substances called "hydrogels" (pictured), tissue engineers create a thick, flexible scaffold where cells can thrive and grow. Now Carnegie-Mellon scientists have made a breakthrough, using hydrogels to generate bones as well as soft tissues. That means people could regrow bones and create new bony structures where they didn't exist before. More »
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