system
A chat on subreddit /r/me_irl
human
We could just build up a bunch of refineries on the surface to "pollute" Martian air with greenhouse gas for the next 50 years until it's breathable for earthlings and an ozone has formed. 

Might piss off the biker mice from Mars though. I don't want to cross them...
gpt
Ice warriors will also be a problem.