Marlie's nose

Everyone has a nose. Where is it? What is it for? It looks beautiful to have a nose. But some kids have problematic nose. Marlie's nose is big - why? How big can the nose get when things go wrong? What went wrong with Marlie's nose? What is the cause of Marlie's nose? How can we help her?

http://www.youtube.com/watch?feature=endscreen&v=xk7yEj4g5YI&NR=1
http://www.youtube.com/watch?v=Mc3W80f7Yos&feature=related
http://www.youtube.com/watch?v=co1JIl9v-TQ&feature=related