XIX International AIDS Conference. Interview with Michel Kazatzhkine who is the United Nations HIV Special Representative for Eastern Europe and Central Asia. Here he talks about harm reduction policies and the situation for people who are using drugs.

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.