High in Houston (S04E04)

In the Fifth Ward, a drug hub of Huston, Tex., see firsthand how drugs are dominating the area's economy and populous. We'll talk to a major crack cocaine dealer, a Hispanic street gang member, addicts, a pimp who claims to rule the streets and a full-patch member of the Aryan Brotherhood of Texas white supremacist prison gang. Learn about a prescription cough remedy that abusers call 'lean' ' named because if you take enough of it, you lean or fall over. (National Geographic)