finally for one of our newshour essays: as students across the country prepare to return to school, peggy orenstein, the author of thest recent book "girls and sex" shares ideas on how young men and women should rethink intimacy in their relationships. >> for several years now we've been engaged in a national debate about sexual assault onua campus. no question it's crucial that young people understand the ground rules for consent. but that's where the conversation is ending, and when it does, the media and the internet, that new digital street corner, will educate our kids for us. if we truly want young people to engage safely, ethically and, yes, pleasurably, it's time to have frank, honest discussions about what happens after yes. one thing that's clear is that we have to broaden our definition of sex beyond intercourse, because despite the hype, kids are not having intercourse at a younger age, but they are engaging in other behavior, and by ignoring, that by allowing kids to label other acts as "not sex," they are not subject to the same rules. that opens the door to both risky behavior and di