Comment by ElectronCharge

I agree that if the best we can do is something that can't be self-sustaining, Mars should wait until that changes.

I disagree with KSR's main points. Perchlorates are solvable, the effects of Martian gravity are not known (and are solvable if there is a problem), and finally radiation is a non-issue for those living in the only sane place on Mars, underground.

Whether or not Mars is a target in the near term, we need to proceed with our current plan of establishing a permanent base on the Moon. The only way to improve on Earth's resource limitations is to exploit the virtually unlimited riches available beyond her atmosphere, and the Moon is the first step. It's also a great place for heavy industry, not to mention astronomy!