In a market that sells high heels for babies and thongs for tweens, it doesn't take a genius to see that sex, if not porn, has invaded our lives. Whether we welcome it or not, television brings it into our living rooms and the Web brings it into our bedrooms. According to a 2007 study from the University of Alberta, as many as 90 percent of boys and 70 percent of girls aged 13 to 14 have accessed sexually explicit content at least once. But it isn't just sex that [Kevin] Scott is worried about. He's more interested in how we, as a culture, often mimic the most raunchy, degrading parts of it-many of which, he says, come directly from pornography. In The Porning of America", which he has written with colleague Carmine Sarracino, a professor of American literature, the duo argue that ... the influence of porn on mainstream culture is affecting our self perceptions and behavior - in everything from fashion to body image to how we conceptualize our sexuality. Sarracino and Scott define "porning" as the way advertising and society in general have borrowed from the ideas and characteristics central to most American pornography: sex as commodity, sexuality as overt, narrow views of women and male-female relationships, bad girls and dirty boys, domination and submission. "Both boys and girls are really confused about what's appropriate," says [author Lyn Mikel] Brown. Helping kids make that distinction may be an increasingly uphill battle.