watching how much my students have grown, and then i'll get these phone calls like, hey, gloria, i'm just calling to say thank you. >> reporter: she'll head home to africa, bringing with her, she hopes, lessons for an entire continent, anna werner, cbs news, berkeley, california. >> duncan: each one teach one. still ahead on the "cbs weekend news," badger battle. wisconsin has grown attached to ths statute, but the navy wants it back. statute, but the navy s itit back. ic brereast cancerer arare living i in the momemt and takingng ibrance.. ibibrance withth an aromatae inhihibitor is for p postmenopauausal won or for m men with hrhr+, her2- metatastatic breastst cancer asas the firstst hormonall babased therapapy. ibrance e plus letrorozole signgnificantly y delayed diseasase progressssion versrsus letrozozole. ibrance mamay cause lolow white blooood cell couounts ththat may leaead to seririous infectctions. ibrance e may cause e severe ininflammationon of the lulu.