How will humans take the next step into outer space – traveling to Mars not to visit, but to stay?<br /><br />Part 5: Why One Way<br />Mars One plans one-way missions to Mars; the goal is not simply to explore, but to colonize the red planet. A one-way trip saves billions and eliminates the risk of a return voyage. But can the crew survive in such utter isolation? Some candidates for the mission reflect on this challenge.
