What will they be doing on a trip to Mars? Foregoing the obvious salacious innuendo for a mixed gender crew, the more obvious and paramount question is " Can and how will the crew and any passengers survive either a one way trip and/or a return trip"? Basically, at this time, in this decade why go to Mars; there's no one there, and the "climate" is worse than the Sahara desert in summer. Want the vicarious experience? Watch the Star Trek re-runs and spend some time reading physical science books, (take a look at the offerings at "TheGreatCourses.com).