Patients at Johns Hopkins Hospital laugh every time they spot the new, 4-foot-tall doctor.

Its not a size issue. The "doctor" is a robot with a computer-screen head, video-camera eyes and a speaker for a mouth.

Doctor Robot is being tested at Johns Hopkins Hospital in Baltimore and several adult-care facilities around the country to find out how patients respond to robotic medical surrogates.

Read the entire story at Wired News.