FloatsomNJetsom writes "Popular Mechanics has up an interesting story, discussing what the long-term implications of the Lisa Nowak incident could mean for Mars Mission crew decisions: With a 30-month roundtrip, that isn't the sort of thing you'd want to happen in space. Scientists have been warning about the problems of sex on long-term spaceflight, and experts are divided as to whether you want a crew of older married couples, or asexual unitard-wearing eunuchs. The point the article makes specifically is that NASA's current archetype of highly-driven, task-oriented people might be precisely the wrong type for a Mars expedition. In addition scientists may use genomics or even functional MRI in screening astronauts, in addition to facial-recognition computers to monitor mental health during the mission." Maybe observers could just deploy the brain scanner to keep track of them?