A new scare in the air. Cancer. Scientists at Harvard have done a study that finds flight attendants have a higher rate of some cancers than the public. We speak with a researcher about whether frequent flyer passengers share the danger.  Later... after he killed himself, an autopsy found that a 21-year-old football player from Orange County had the brain of a 65-year-old man and the brain disease C-T-E that inflicts athletes. We speak with his parents and an expert about how much YOU should worry if your child is playing school football.