Scientists find desert moss ‘that can survive on Mars’

may help establish life on the red plane

We should... ya know, make sure there is no life there first. Even a small planet is a big place, and we've looked in very few places. Also even if there is no life there's still a lot Mars could tell us about what a pre-biotic Earth was like.

I just think we need to examine the only other terrestrial planet in the system that won't light you on fire fairly thoroughly before trying to terraform it into a Wish-dot-com version of Earth.