rita el-khouri is one of some 3,000 female scientists working for l'oréal, the sponsor of the website so, why don't more girls go into s.t.e.m. careers, like science and math? >> i think part of the reason why a lot of girls aren't going into those fields today is because we don't have enough role models and resources that are encouraging and inspiring the youth to be interested into s.t.e.m. fields. that's why, actually, l'oréal usa has created a community -- an online community -- where girls can go and actually explore, discover, and achieve in the great world of science, technology, engineering, and mathematics, or the acronym s.t.e.m. >> we'll talk more about the site a few minutes, but first, let me tell you about my visit to the new york hall of science. there, i met saijah, a high-school senior. she volunteers at the hall as an explainer. with more than 300 exhibits, there's a lot to explain to visitors, and saijah is perfectly comfortable talking about science. >> i really feel like there's no excuse for girls not to be involved in science, especially if they love it. i feel