and then this two brothers thing into the super bowl. i'm still mad the vikings aren't there. must be a conspiracy there or something. anyway, tonight in the survey, i asked you will republicans ever live in an evidence-based world. 2% of you say yes. 98% of you say no. coming up, stunning new details about the space shuttle "columbia" disaster. the nasa manager in charge admits what really went wrong ten years ago. find out what he regrets most, when we come back. stay with us. regrettable.