T-Rex may be gone, but there are still dinosaurs all around us. Paleontologist Jack Horner tells host Bruce Gellerman that the birds we see every day are really avian dinosaurs. And he wants to give them the push they need to look like their extinct ancestors. Horner is the co-author of the new book, How to Build a Dinosaur. In it, he describes the science behind turning a chicken into chicken-o-saurus.