. >> girls, when you kick, feel your arms as close as they can >> meet wendy hilliard, a woman who made sports history. >> i was the first black to compete for the united states in rhythmic gymnastics. >> rhythmic gymnastics is a relatively recent olympic event. it uses props, like ribbons and hoops, in routines. and although other countries had athletes of color, the u.s. didn't. >> yeah, this way -- one, two. >> back in the 1970s, wendy had to overcome racism to earn a spot on the national team. >> good. stretch, stretch, stretch! it was a challenge, because i had to sometimes go against situations where if it was a group routine, they didn't want to choose me 'cause i stood out and la la la. so it was unfortunate that i had to go through that. >> let's go, let's go, let's go. >> pace yourself. pace yourself. >> wendy succeeded. she even went on to coach the national team. but she never forgot how difficult it was for minority kids to get into gymnastics of the lack of role models, as well as the cost of equipment and training, often put the sport out of reach. so she started a founda

. >> meet wendy hilliard, a woman who made sports history. >> i was the first black to compete for the united states in rhythmic gymnastics. >> rhythmic gymnastics is a relatively recent olympic event. hoops, in routines. and although other countries had athletes of color, the u.s. didn't. >> yeah, this way -- one, two. >> back in the 1970s, wendy had to overcome racism to earn a spot on the national team. >> good. stretch, stretch, stretch! it was a challenge, because i had to sometimes go against situations where if it was a group routine, they didn't want to choose me 'cause i stood out and la la la. so it was unfortunate that i had to go through that. >> let's go, let's go, let's go. >> pace yourself. pace yourself. >> wendy succeeded. she even went on to coach the national team. but she never forgot how difficult it was for minority kids to get into gymnastics of any kind. the lack of role models, as well as the cost of equipment and training, often put the sport out of reach. so she started a foundation to turn that around. >> the goal is really to introduce kids to the sport of

it takes talent, hard work, and a helping hand from caring role models, like wendy hilliard. [ bat cracks ] [ crowd cheering ] >> the boston red sox and st. louis cardinals have squared off on four different occasions the cardinals won the first two meetings in 1946 and 1967, but the red sox won the last two meetings in 2004 and 2013. i'm matt for "teen kids news." >> there's lots more ahead o we'll be right back. >> one of the best weapons to fight disease is one of the simplest items we have in our home. jacelyn tells us more. >> what's the number-one invention that americans could not live without? >> fire. >> um, i would, guess... cars. >> i think, , ke, an iphone. >> your phone. >> um...i don't know. like, your phone, i guess? >> the answer may surprise you. according to the experts, the without is this -- the humble toothbrush. the ancient babylonians used to clean their teeth by chewing on a stick, but we've come a long way y nce then. dr. gerry curatolalanows a lot about toothbrushes. he's the go-to oral-health expert on a number of tv shows. welcome. >> hi. thanks for having me.