I've read many unbelievable scientific and technical things here that need to be done to accomplish humans living on Mars. However, I feel this is instead a moral issue. Is the plan to trash Earth to the point where human existence is no longer possible and then just pick up and move to Mars? Should we go on pumping pollution into the air and water at overwhelming rates without even trying to fix that? If as a species we can't solve problems such as using solar energy instead of oil as a primary energy resource, then NONE of the things necessary to live on Mars are possible. I think this is another ruse from "paid" scientists to deflect the interests of the populate from cleaning up where we are vs. moving on to other planets.
Minus our intrusions, the Earth is a paradise; we should treat it that way.