timing issue?
“While we aren’t ruling out the presence of ice, we know is that ice wasn’t needed to form the long run-outs we analysed on Mars,” said Tom Mitchell, co-author of the paper and an associate professor of earthquake geology and rock physics at University College London.
I wonder if the reason they cannot find ice is that they are looking at the wrong time. Maybe in the storms or the extreme cold is when they need to be looking? With the temperature fluctuation they way it is, maybe it goes to a gas during the day and ice at night.
I would suggest the same reason why the FBI and CGHQ cannot find anything before it happens is they are looking at too much data, the wrong time, and in the wrong places.