MARS MAY HAVE FLOWING SALTWATER!! (via CNN) - Scientists have found new evidence for possible  saltwater flows on Mars. The discovery was announced at a NASA news  conference Thursday. Alfred McEwen, lead author of the Science journal study showing these  observations, and his team have been observing Mars using the HiRISE  camera aboard NASA's Mars Reconnaissance Orbiter. His team has identified features on some slopes of the planet that appear to fade in the winter and come back in the spring.