Researchers in China have developed a 3D printed prosthetic hand which can sense temperatures, particularly extreme temperatures on objects which a wearer wishes to pick up. If a temperature is determined to be "too hot", the hand released that object and send an electrical signal back to the wearer's muscle. This could end up preventing a lot of accidents that wearers of prosthetic arms and hand experience. Read and see more at http://3dprint.com/71339/temperature-sensitive-hand/

I would love to see these come to market. It's really amazing what technology is doing, especially 3D printing. Below is a picture of this 3D printed hand: