[renormalised (Carl)]

There's only one way to solve this once and for all........go there and look for ourselves. Simple as that. I'm a geologist....I'll go there if they like and do the research. What about all the other geologists, hydrologists etc etc etc. Instead of sitting off 35-240 million miles away and pontificating about what is or isn't there, and instead of peering down from hundreds of miles up with various orbiting satellites, why not get Mark 1 eyeball and brain down there to take a look and do the necessary ground truthing and study. You can't tell what's in a rock outcrop by staring at it with binoculars from 10 mile away. You have to go there and sit on the rock and look at what's there. There's far more to geology than staring at the results of remotely sensed data.