“Our quest on Mars has been to ‘follow the water,’ in our search for life in the universe, and now we have convincing science that validates what we’ve long suspected,” said John Grunsfeld, astronaut and associate administrator of NASA’s Science Mission Directorate in Washington. “This is a significant development, as it appears to confirm that water -- albeit briny -- is flowing today on the surface of Mars.”
Slightly tangentially: the conversation about Mars always seems to turn to colonization. And it makes me sad that humans fantasize about terraforming Mars when they can't even stop themselves de-terraforming Earth. This discovery is interesting in itself though.