This is a must read article by anyone who is interested in Mars and someday going there. I'm no scientist, but I sure can help out with building a colony there.
Ref. "A One-Way Ticket to Mars" by Lawrence M. Krauss. Aug. 31, 2009. Op-Ed New York Times (http://www.nytimes.com/2009/09/01/opinion/01krauss.html?_r=2)