[NoCmpromiz]

Hey Aardwoof - we wouldn't want you to think that we have forgotten about you once you so graciously laid down the mat at the door of this thread thereby allowing us license to wipe our feet on your carcass, conveniently lying on said mat, which has 'Welcome' tattooed on it..

Allow me to assist in furthering your speculations RE: Mars.

Your attention is directed to the curtain to your left. Behind that curtain Door Number Three is concealed. Go ahead, open Door Number Three. Upon doing so, you can join Dr John Brandenburg in espousing yet another loonie leftism about Mars...Ancient Martian civilisation was wiped out by nuclear bomb-wielding aliens

The rest of us have our popcorn...

[NicknamedBob]

Ancient Mars, back when it had oceans, still had a lot of arable land area. Two nuclear devices would have been insufficient to do much damage to a global civilization.

Losing its atmosphere over thousands of years, on the other hand, would have been breathtakingly catastrophic.