Bionic limbs

"Cyborgs, heroes with missing hands, and prosthetics that allow sight in the blind are just some of the unbelievable plot points in science fiction that began years ago. Today, much of this technology exists. Those without legs can be fitted with bionic limbs so well made they can run marathons. Readers learn the history of bionic limbs in science fiction and popular culture and connect it to the real . . . science of today"--OCLC.