Favorite Book: Smiles To Go

I picked this book because I thiink it's a good book. It's about this boy, his family and friends. When he found out about the first death of an atom(I think) his life changed. I can't really explain it though. After his little sister got in an accident, he realized that she did all the stuff she did for him. she looked up to him but he didn't know. That is the best I can explain about this book.