> Also, the lower Mars gravity ought to be fun for playing neat Mars-specific ball games and for doing extreme rock climbing.

And such extreme rocks to climb, too.

When we get to Mars, I say we plant the RinkWorks logo at the top of Mount Olympus. A simple 20km vertical wall, followed by a 250km hike up a 7° slope, taking you well outside the atmosphere.

You'll have to supply your own oxygen supply, though.

winter"That would be cool"mute