===Story=== ''When Dinosaurs Ruled'' uses enhanced 3-D animation to present lithe, agile dinosaurs that look more like a nature program than science fiction. ''Ground Zero'' incorporates all the latest research into creating warm-bloodedness, skin coloration, kinetics, and social behaviors, not to mention newly discovered dinosaurs. The information is presented with helpful charts, graphs, and visuals in language that is easy to understand but not at all dumbed down. The soundtrack, excellent pacing, cinematography, and animation are bonuses. The fourth in a five-part series, this DVD focuses on dinosaurs found in South America and the hunt for the first dinosaur. The DVD's special features include direct scene access where you can jump between thematic sections such as Nomadic Dinosaurs, Small Dinosaurs, and Disaster in Tunisia, a trivia quiz to see how well you remember the information presented, and spotlighted dinosaurs where you can jump to the specific dinosaurs presented--Majungotholus, Rahonavis, Kirky, Carchardontosaurus, Deltadromeus, Spinosaurus, Brachiosaurus, and Massospondylus. Expert or novice, kid or grownup, this DVD will appeal to anyone interested in learning more about what the earth was like ''When Dinosaurs Ruled''. ''--Tara Chace''