Marvelyn Brown was 19 when she found out she was HIV positive. It was in 2003, and on NPR yesterday, she said she barely knew anything about the disease when she was diagnosed. She said her biggest worry was the prom, and when Marvelyn told her previous partners that she was infected, some of them didn't even know that HIV was sexually transmitted. Activist Rae Lewis Thornton says that some of Generation Y, particularly young black women, are ignorant of HIV and AIDS because they see it as only happening to others: to gays, to whites, to IV drug users. "Every time you're having unprotected sex with a man," Thornton said, "you're putting your life against that sexual experience." Marvelyn has written a book about her coming to terms with HIV called The Naked Truth: Young, Beautiful, and (HIV) Positive. [NPR]