Caption: 
An SwRI scientist modeled the climate of Mars to understand if hydrated salts or brines on the surface of the Red Planet could harbor life. The results suggest that hydrated salts and brines on Mars are not supportive of life. For example, if the dark streaks shown here are formed by the flow of briny water, then that briny water would be too cold to support life.

Credit: 
Courtesy of NASA/JPL-Caltech/University of Arizona