It's the blood of Martian sacrifices

http://www.nasa.gov/mission_pages/MR...o20110804.html
or possibly something more benign like salt water...

Yay,.

Yay,.

That's it?

Personally, I'm curious how these outflows of water have been sustained all this time. Without evaporation to carry the water upward, it has to run out, eventually.

Obviously there's no life on mars but I'm pretty sure there is life somewhere out there, unless the universe is like a really big cylindrical mirror.

Life is everywhere. Our planet/galaxy/universe is probably, in a sense, a living organism. Perhaps a human lifetime is just a fraction of a fraction of a fraction of a second to our planet.

http://en.wikipedia.org/wiki/Gaia_hypothesis
http://en.wikipedia.org/wiki/Pantheism (semi-related)

Can I live on Mars now?
No?
Call me back when that's ready.

Yes, you can live on Mars now. You wont last long, though...

Mars ain't the kind of place to raise your kids

There may have been life in the past. We just need to dig deeper into Mars. We might even find technology. There's too many Why's and How's to ask, that's how religion was born.

Religion was started because some smart guys realized that they could manipulate people into doing whatever they say and giving them money. But your point is taken, and I agree.