This fresh and exciting book takes young readers on a fascinating journey from the development of the first life forms on the planet to the emergence of the dinosaurs--and their eventual extinction. Thirty key topics explore these fascinating creatures, how they evolved, what they ate, their social behavior, what they looked like, and how we have come to understand them from their fossilized remains.    Each topic is presented in a neat 30-second soundbite, supported by a 3-second flash summary and a full-page colorful artwork. Fun active 'missions' support the topics and encourage kids to find out more.