Give me a break. These guys are engaged in speculative research for which they presume mimics conditions on Mars. In interesting, but its merely guestwork. The absolute best that they've offerred is that its possible that evaporation rates on Mars could be slower than expected. But it still evaporates. And in an atmosphere that is 10,000 times drier and 100 times thinner than the atmosphere here on earth, the chances of a liquid drop of water persisting for more than a few moments is infinitesimal.

I have no doubt that there are transient and fleeting conditions in some locations on Mars where minute amounts of liquid water are possible for brief periods of time, but this requires the presence of H2O during these conditions on a planet whose surface and atmosphere is thousands of times drier than any place on earth.