that's why, actually, l'or\al 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. [ majestic music plays ] >> we'll talk more about the site in 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 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 be involved love it. i feel like, yeah, they should definitely go into it. it's important. we need more women in science. >> to prove her point, saijah invited me to join her and dr. el-khouri in one of the hall's most popular demonstrations. today? >> we're actually gonna look at the ideal gas law. >> but first, before we begin, we need to get you a smock just for safety. >> perfect. matches my shirt. >> it does. [ rock music plays ] so, here's where