Episode Detail: Sanjay Gupta, M.D. - Sanjay Gupta, M.D.
Examining the positions of GOP presidential candidates Newt Gingrich and Ron Paul on health care; a report on toxic air in schools; an interview with University of North Carolina brain-injury expert Kevin Guskiewicz (part of a preview of "Dr. Sanjay Gupta: Big Hits, Broken Dreams," about concussions in high-school football).