Elon Musk's Mars colonization plans: what we know so far

In less than a week, SpaceX’s CEO Elon Musk will finally explain how he plans to colonize Mars within the next few decades. It’s a goal that he has adamantly championed for years, though he hasn’t given many specifics about it. That will change on September 27th, when Musk is expected to talk about the vehicles and technologies needed to bring people to the Red Planet, and then build a long-term settlement there.