It’s not only kids who are captivated by dinosaurs – the idea that gigantic reptiles walked the Earth over 65 million years ago is pretty awe inspiring. Of course, they weren’t all giants – some were only the size of chickens. Today we’re talking about dinosaurs and highlighting some fascinating recent finds. We’ll look at new theories about their size – why they got so big – and about their true colors. We’ll also learn about the thrill of digging up and discovering fossils from two dinosaur devotees. PETER DODSON is a paleontologist at the University of Pennsylvania and has discovered and named a number of dinosaurs. DON LESSEM is a dinosaur educator and author. He is the curator of the new exhibit “Giant Mysterious Dinosaurs” at the Franklin Institute in Philadelphia.