In the continuation of the episode on AIDS, Silmar Geremia, Jorge Costa and Matheus Gonçalves (#SciCast team), with the special participation of Atila Iamarino (@oatila and Canal Nerdologia) and Renata Picoli, get their hair on end over a number: 500. And find out what's needed to increase the use of condoms and our opinion on where the problem of the HIV epidemic really lies (Spoiler: In people's heads).
