This story seems like it would have been right up Mac Tonnies' alley.
NASA spacecraft spots evidence for flowing water on Mars
|Future site of a water park?|
A NASA spacecraft in orbit around Mars has detected signs of what appear to be seasonal flows of salty water on the surface of the red planet during warmer summer months, an "eye-opening" finding that could help scientists target future missions to look for signs of microbial life in the frigid soil, researchers said today.
"We have found repeated and predictable evidence suggesting water flowing on Mars," said Michael Meyer, lead scientist with NASA's Mars Exploration office.