Sex is everywhere: TV, billboards, magazines, music videos, even textbooks and the Internet. But how much do teenagers really know? Four million teens contract a sexually transmitted disease each year; nearly a third of sexually active teenage girls have already been pregnant at least once; two-thirds of teenagers say their parents have never talked to them about where to get birth control. Gail Elizabeth Wyatt is a sex researcher author of the book 'No More Clueless Sex.' She says, 'We need ...[Read Story ]