Helene Gayle is an AIDS expert who has been working in many different initiatives in the US, among them the Centers for Disease Control (CDC). She also works in President Obama's advisory group on HIV/AIDS. Here she talks about understanding and changing behaviors.

Interview with Agneta Dreber from Folkhälsomyndigheten (National Institute of Public Health) in Sweden. She talks about the Swedish HIV/AIDS situation, about sexuality education in schools and HIV/AIDS education in workplaces.