I agree. I have long wanted to spend time in Antartica, but I wouldn't set foot on a shuttle destined for Mars for this reason: breathable atmosphere. Maybe the

I agree. I have long wanted to spend time in Antartica, but I wouldn't set foot on a shuttle destined for Mars for this reason: breathable atmosphere. Maybe the Mars project is more comparable to sending people into deep sea, leaving them there, and sending fresh supplies with a 6-month delay?