Printing prosthetics: 3-D printers make 'superhero' hands for kids in need - WTOP: "A class of fifth-graders at Western Salisbury Elementary School near Allentown, Pennsylvania, learned about Chi and his work at Johns Hopkins from an online news service. They knew he was printing hands for kids, but wondered if they could convince him to make one for their beloved fourth-grade teacher, Patty Anderson."
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