I thought Mars lost water and have thin atmosphere because of loss of its magnetic field. Mars owes its dry and dusty appearance to its wispy atmosphere, less

I thought Mars lost water and have thin atmosphere because of loss of its magnetic field. Mars owes its dry and dusty appearance to its wispy atmosphere, less than 1 percent of the thickness of the Earth's. But it wasn't always that way: The Red Planet formerly had a much thicker atmosphere that probably allowed for liquid water on the surface, an atmosphere that was depleted when the planet's magnetic field faded away. http://www.popularmechanics.com/science/space/moon-mars/what-happened-to-mars-atmosphere-15277534 http://www.popularmechanics.com/science/space/moon-mars/what...