to censor this research or not. now, we have a statement from james sensen brenner who's a congressman who's really opposed no this and thinks it's a big -- opposed to this and thinks it's a big risk. the stakes literally couldn't be higher. al-qaeda in the arabian peninsula recently put out a call to arms for brothers with degrees in microbiology or chemistry. very scary stuff, jenna. but we spoke to a biosecurity expert who actually does not believe that al-qaeda would ever get ahold of this. let's take a look at what he says. >> when you get an organization such as al-qaeda which is an established threat that's looking to kill lots of people, for them it's not a realistic option. >> so you see that there's some question, jenna, about whether this really could get into the wrong hands. there's also a question about whether the new virus is really that dangerous. the scientists have backtracked.