"New findings from NASA's Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet. These darkish streaks appear to ebb and flow over time. They darken and appear to flow down steep slopes during warm seasons, and then fade in cooler seasons. They appear in several locations on Mars when temperatures are above minus 10 degrees Fahrenheit (minus 23 Celsius), and disappear at colder times."
"We find evidence for hydrated salts at all four locations in the seasons when recurring slope lineae are most extensive, which suggests that the source of hydration is recurring slope lineae activity. The hydrated salts most consistent with the spectral absorption features we detect are magnesium perchlorate, magnesium chlorate and sodium perchlorate. Our findings strongly support the hypothesis that recurring slope lineae form as a result of contemporary water activity on Mars."
Delirious Rover Hallucinates Water On Mars, The Onion
"Earlier this morning, mission control received an enthusiastic transmission from Curiosity indicating that it had detected a significant volume of cold, clear, crystal-blue water capable of supporting life," said project scientist Ashwin Vasavada, adding that the demented rover then made a beeline for what its strained, dust-clogged sensors determined to be a sparkling desert oasis encircled in waving palm fronds."