After spending $6 million to create bionic superhero Steve Austin, scientists have now built a real bionic man from artificial limbs for a sixth of the price.
  Known as Rex — short for robotic exoskeleton — his 6ft frame is made up of an array of artificial limbs and organs from around the world.

Built for a Channel 4 documentary exploring how far technology has developed, Rex raises ethical dilemmas.

Research on advanced prosthetics and artificial organs means scientists could  improve on body parts.