Paul Sereno has discovered dinosaurs on several continents. His overall aim is to map the dinosaur family tree by tracing the many evolutionary changes recorded in their skeletons. The patterns of change recorded on the branches of the evolutionary tree are key to understanding how evolution works over millions of years. Sereno fuses his mission of scientific research with his educational mission, engaging his students directly in the process of discovery. In 1998, Sereno and educator Gabrielle Lyon co-founded Project Exploration, an organization dedicated to bringing dinosaur discoveries and natural science to the public and providing innovative educational opportunities for city kids.