>> welcome back to our special edition of "hannity, stoned america." researchers out northwestern university discovered that young adults who use marijuana just once or twice a week have significant brain abnormalities and when our team of producers were in denver this weekend, well, they asked the stoners what they thought about the study. here is what they said. >> 4/20! >> i'm not a scientist, i didn't read the study. i think anything you put in your body that is foreign can be a problem. it's america, people will do what they want. it's free will to an extent and i don't think marijuana is any more dangerous than alcohol. if we out law marijuana, we should out law, marijuana, too.