Mars... a big step for womankind? (Filed: 21/01/2004) It's not just physical dangers astronauts have to contend with. Psychological friction is a big problem ? especially for men, says Raj Persaud The Bush space plan When President Bush announced plans to send humans to Mars last week, he talked of weightlessness and radiation as being the key dangers. But there is increasing evidence to show that one of the greatest hazards lies in the crew itself. Close confinement: an all-male crew can lead to stress linked to competition and aggression The hostile space environment and the hardware will, of course,...