Robots can drive on the plains and craters of Mars, but what if we could explore cliffs, polar caps and other hard-to-reach places on the Red Planet and beyond? NASA Jet Propulsion Laboratory engineers have designed a four-limbed robot named LEMUR that can scale rock walls using artificial intelligence to find its way around obstacles: https://go.nasa.gov/2JEPStf | NASA - National Aeronautics and Space Administration