Science appears to be on a serious roll this week. Just two days ago we heard of a woman, paralyzed from the neck down, who was able to control a robotic arm with just her thoughts thanks to advances in brain-computer interface technology. And now, in a world first, a double amputee has managed to gain control of two robotic prosthetic arms attached to his body, using his mind. In a short training period, the man was able to manoeuvre the arms simply by thinking about the movements, and performed various different tasks.