Next-gen artificial limbs help amputees grab onto a better life

Even when Adrian Albrich sits still, you can hear the motors in his hand whirring. Bzzzt. Vrrrt. Zyyt. Little more than a month after doctors outfitted him with a new prosthetic left hand, Albrich still fidgets with it, clenching and unclenching, alternating grips, acclimating to the way it feels and reacts.