5th-grader tests 3-D printed robotic arm to help other kids

The soon-to-be 11-year-old left the Washington University School of Medicine lab with an instruction manual for her new robotic arm. Don't get it wet. Turn it off when not in use. Change the two 9-volt batteries.

Pentagon's research agency showcases future tech

Johnny Matheny's handshake is friendly, confident and firm—though not in the bone-crushing manner favored by some of the alpha types here in the Pentagon.

Device may allow sensations in prosthetic hands

To the nearly 2 million people in the U.S. living with the loss of a limb, including U.S. military veterans, prosthetic devices provide restored mobility yet lack sensory feedback. A team of engineers and researchers at Washington ...