[Brilliant]

What they need to do is the "nonenvironmental" thing. Ram a few comets and asteroids into it. Give it a little more gravity, a little more atmosphere, and a little more liquid.

I would start with Phobos and Diemos.

[OXENinFLA]

[djf]

I'm not so sure that Mars is all that hostile now.

Here is a true color image of a Martian morning. Note the clouds and sky color.