black treated johnny cochran, and what did he tell you about why he thought johnny cochran got a brains a conversation with dr. black a few years ago. i asked him about johnny cochran. i said do you have any idea why he got a brain tumor? he replied, it was his cell phone usage. i said, come on, there's a lot of studies that show there's no link. he said, i'm convinced of it. people who use their cell phones a lot, you tend to see it. at that time wealthier people had cell phones and jobs that required them to be on the phone a lot. he's seeing an uptick in brain tumors in that population of people. like you, anderson, it's frightening to think about. but that's what he's starting to see. >> there's no doubt, i'm going to change my behavior on this one. dr. sanjay gupta, appreciate it. thank you. >> any time. >>> you can see the rest of sanjay's investigation this weekend saturday and sunday 7:30. >>> next, one family in mississippi was determined to save their home from the river. we're going to meet them. and there are those who claim that tomorrow is judgment day. remember you've be

will say that i w surprised to hear this defense opening, because i feel like i'm watching a johnny cochran said that little caylee drowned in her family home on june 16th, 2008, and what is interesting about that, this is a florida jury, and we know that in florida, drowning is a leading cause of death for children ages 1 through 4, so this is a theory that may resonate with the jury. >> and speaking of the jury, sunny, this is a tough trial for them, and do we expect they will be shown graphic images of what was left of caylee? >> yes. we do. in fact, they have already been shown in the prosecution's opening statement a photograph of little caylee's skull. interestingly enough, each juror has his or her own little television screen, and the prosecution has already shown a live picture of the smilinging caylka caylee and a picture of caylee's skull, so they will see a lot of graphic photographs and it stard today. >> and what about the demeanor of casey anthony in court today? was she emotional? >> extremely emotional. in the prosecution's case, she was shaking her head no during most of t