The dream of colonizing alien worlds has been a part of western culture for sixty-seventy years. Mars appears to be the most likely candidate for the first settlement. But with every major new piece of knowledge acquired about the Red Planet, the difficulty of such an endeavor increases a notch: radiation levels, hazardous dust, food cultivation and ecology, etc — everyday life gets more challenging than one would expect. A Mars colony appears to be the most complex engineering venture imagined so far and many technology hurdles remain to solve. We will get there, I am sure, but that will be many decades in the future. Whoever pretends otherwise is a charlatan.
Here is a long article that looks at some yet unsolved technological and psychological problems facing tentative Mars colonists and at some people that nevertheless dream of settling there pretty soon — link >>>