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Can you still be considered obese if you weigh less than a grain of sand? This portly nanoscale human figure shows off the capabilities of a new 3-D printing technique developed by researchers at the Vienna University of Technology. The two-photon lithography technique, which could be used to make tiny biomedical devices, produced the figure in about 4 minutes.
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Willie Jones is an associate editor at IEEE Spectrum. In addition to editing and planning daily coverage, he manages several of Spectrum's newsletters and contributes regularly to the monthly Big Picture section that appears in the print edition.