[Earth]

From the looks of the image it looks to be flowing under the ground and seeping into the soil, so possibly it could be that it's warm under the soil of Mars. Also it'd be wonderful if we could live here forever, but due to the Industrial Revolution and greedy corporations, and a clueless population that has no clue what they're doing to the environment, that just isn't possible.

We can technically live on mars just not the same exact way we live on earth at least not for a while.

mars-one.com is a real program its not fake what they are doing is legit and is going to happen of course the first crew that goes up some time in like the late 2020's is pretty much the ones who will know for sure. Either way if they fail at it Nasa is still going to send humans to mars and do more testing.

But lets not forget even though right now mars is the planet we can reach that has potential to be changed there is still other planets in habitable zones much like earth that Nasa is working on the technology to get to but it probably won't be in any of our lifetimes assuming we don't destroy our own planet before then.