Limit Hearing News Today

>> yes. i believe -- >> can you tell us today what studies you consulted that led to your change of opinion -- >> the purpose of this sr. limited hearilimi -- limit hearing is a richardson hearing so please keep on topic for that. >> all right. let me focus you then on this. when did you change your mind about the significance of the thc level in trayvon martins blood? >> i dont remember exactly time. could be in last 60 days because -- >> 60 days? >> yes. when we decide to have this trial, in t...