Water on Mars – for real this time?

The ‘water on Mars’ question has been current since before I was born, and hence I might be forgiven for a little skepticism when anyone comes out with a definitive answer either way. Technology, however, I trust slightly more – so I’m tentatively stoked to hear that the Mars Express probe has sent back results suggesting there’s enough ice at the Martian South Pole to cover the whole planet ten meters deep if it melted.