31.   Hip-hop, to the discomfort of artistic purists and cultural puritans alike, has become the lingua franca of global youth culture.

32.   Heavy-metal youth culture was put on trial.

33.   Hollywood has embraced youth culture in recent years with a zest rarely seen before.

34.   Holsapple knows all about the youth culture, having once been a club favorite with the garage-rocking dBs.

35.   I gave up and zapped off an e-mail to NetMom, an expert in youth culture on the Internet.

36.   I had had a hair epiphany, I explained, after a decade of reporting on youth culture.

37.   I was astonished because of her youth, and yet the book was not about youth culture.

38.   If American parents wince when they hear that phrase, it will be because it seems symptomatic not only of youth culture but of youth in general.

39.   In doing so she raises more questions about parenting and youth culture than she answers.

40.   In response, rock fragmented itself, mirroring a lost sense of a shared youth culture.