that we need to educate. we need people to understand the drug addiction is an organic brain disease that as you use drugs, your brain chemistry changes. so we need people to understand that, in fact, it's a very real disease, an organic brain disease. >> right. we all know that it's very addictive, it's bad. but your news today is it changes your brain. >> it absolutely changes your brain. >> all right. dr. stephen dewey, thank you very much. thanks for your life's work on this. >> thank you very much. >> it's so important. continuing on thursday, our series will continue with drug addiction in america, you're going to meet the first police department with a pioneer program aimed at tackling the heroin problem head-on, and how it could be a model for the whole country. so stick around for that. meanwhile, 19 minutes before the top of the hour. we've got a fox news alert. brand-new video just in of an arrest in a security scare in a major airport overnight. we are live with breaking details straight ahead.