marÍa candelaria gabriel created her unique house mainly out of recycled materials. a look. >> hello, my name is maria candelaria gabriel. welcome! come and look at my home. i like the bottles in the wall, the colors -- it's very different. i'm very proud of my home. >> it's nice and warm and has three rooms. now we're in my work room. we spend all day here, and sometimes the nights, too. we weave this material. i make it together with my children. this is my bedroom. i sleep here with my two daughters and my little son josuÉ. thanks for visiting me at my home in comÁlapa! iÓs! >> thanks for having us. have you ever heard of someone who grew up in a township going on to become an opera super star? well, our reporter in south africa has just met a couple of young singers who are on track to do just that. their parents weren't even allowed to buy an opera ticket, but now linda nteleza and thesele kemane are working hard to make classical music their ticket to a better future. see and hear for yourself. ♪ >> arias are her world. >> when i'm singing, i feel different, li