Apple has hired former Nest executive Yoky Matsuoka to work on the company’s health intiatives, Fortune reports. Matsuoka is a famed robotics expert who co-founded Google’s X lab, helped develop a revolutionary robotic arm at MIT and won a MacArthur Foundation “genius” grant for using technology to help disabled people and stroke victims regain the use of their limbs. She left her position as Nest’s head of technology in 2014…