population that has a genetic predisposition to be supersensitive to toxic things in the environment and serenes may be one of them. in fact, the committee of the national institute for mental health, that decides on the directions of research has just opened that door a little by calling for research to look for that particular subsection. >> i want to take us back to your family, because, of course, it's such a personal story, and an emotional one for you, i'm sure. you know, i interviewed my own parents a couple of years ago and it was such a surreal experience. you interviewed your own family, including your 10-year-old granddaughter. let's listen to what she said and we'll talk on the backside. >> i hope that he gets healed soon. >> yeah. >> sometimes when other people, they -- their lives seem perfect. and when yours -- when yours, you have to do something that