(AGI) Paris, Sept 28 - Real evidence of the presence of saltwater as a liquid on Mars, was announced by NASA. A study byAmerican and French specialists said there is "spectralevidence" that strongly suggests that the four slope lineae, orlines, at different points on the surface of Mars were causedby "the flow of salt water". The grooves, which are severalhundred metres long and around five metres wide, appearedduring the hottest months, widened and then vanished as thetemperature dropped, said the journal Nature Geoscience. "Marsis not the dry arid planet we thought it was," said NASA'sdirector of planetary studies, Jim Green. In certainsituations, liquid water has been found on Mars, he said. (AGI). .