just -- these rogue chemists can alter molecules to create entirely new chemicals with similar effects. now, they technically my still be considered illegal but it's hard to prosecute and new chemicals are being created i would say almost every day to try to get around these laws. so there's a lot of gray area there. >> what's behind the popularity? is it the effect they have? is it the price, the availability? what did you find out? >> it's all of it. when you talk about synthetic marijuana, you have a drug that this guy jay, who you saw in the clip, he can literally go into a convenience store and buy this stuff over the counter. it's cheaper than marijuana and he says more powerful. we spoke with kids. these students at a university, physics majors, biology majors, who are dealing this stuff. where do they get it? they get it on the internet. you can buy this stuff with the click of a mouse and it can arrive at your doorstep the next day. >> what's the bottom line? what do you want people to take away from this? >> you know, i think that people