Lots of news in the world of medical robotics today. First, a new artificial nose that's sensitive enough to detect lung cancer by smelling the patient's breath. This is the latest in a series of improvements to artificial noses - see our previous articles for more on a nose sensor that can smell pneumonia causing bacteria and a sensor based on a dogs nose. Next, a new electronic retinal prosthesis. See the BBC article and EurekAlert! article describing the successful completion of a test program to implant the new vision prosthesis in three human patients. The artificial retina acts as an interface between a video camera and the optic nerve. Last, a UV Irvine press release describing their new, five-year, $1.4 million project to develop a nanoscale ROV to travel through the human digestive system. What would this new nanoprobe look like? Check out our previous story for links to artists renderings of medical nanobots.