Sergio Peralta was nervous about starting high school with a partial hand, but his classmates showed him an awe-inspiring amount of support.

Engineers have created a plastic skin-like material that can detect pressure and deliver a Morse code-like signal directly to a living brain cell. The work takes a big step toward adding a sense of touch to prosthetic limbs.

A five-year-old girl from Las Vegas threw the first pitch with her new 3D-printed hand at a baseball game on Monday.