http://www.nytimes.com/2015/09/29/science/space/mars-life-liquid-water.html
Dark narrow streaks, up to a few hundred yards long, are seen along many slopes on Mars including Garni Crater. The identification of waterlogged salts in these streaks fits with the idea that they are formed by the underground flow of briny water that wets the surface.
The material is much more interesting. When I discussed a topic later in the term, I found that the students…
Laura Davidson, Teacher