Comment Re:Can't we just send them all? (Score 1) 176
The problem is by failing you'd mess it up for everyone else, by contaminating Mars with Earth micro-organisms, you have no idea how valuable a Pristine Mars with probably independently evolved life is potentially for science and for humanity. If you could somehow colonize Mars with humans without bringing their micro-organisms along as well, but no-one knows a way to do that.
There is a way around that too, to explore Mars telerobotically to start with. Why such a rush to land humans on the surface when the surface is cold as Antarctica, near vacuum, and far less habitable than the coldest driest deserts on Earth (the McMurdo dry valleys in Antarctica and the Atacama desert are both far more habitable for humans than Mars)? Is easier to supply and maintain a colony in orbit, the Molniya orbit is easier to get to in terms of delta v than the Moon. Then you can control telerobots on the surface instead.
See:
http://www.science20.com/robert_inventor/blog/ten_reasons_not_live_mars_great_place_explore-118531
See http://www.science20.com/robert_inventor039s_column/blog/how_valuable_pristine_mars_humanity_opinion_piece-115954