Our guest is Kate Biberdorf, a scientist and chemistry professor at The University of Texas who -- as "Kate the Chemist" -- has written a series of very popular books on science for young readers. Now comes her first book for adults, which she tells us about -- it's a fun, wide-ranging, easy-to-read work called "It's Elemental: The Hidden Chemistry in Everything." Ever wondered what makes dough rise? Or how exactly coffee gives us that all-important energy boost? Or why shampoo can sometimes