What is the universe made of? Why did dinosaurs go extinct? What do magic tricks and hip-hop have to with math? What can amphibians and reptiles tell us about the environment? What do engineers have to do with baseball? Find out at the first ever USA Science & Engineering Festival Expo on the National Mall! Explore science & engineering with hundreds of free, hands-on activities and over 40 science shows on three different stages. The two-day Expo is perfect for teens, children and their families, and anyone with a curious mind who is looking for a weekend of fun and discovery. Build an underwater robot, chat with a Nobel Laureate, explore the science behind the magic of Hogwarts Academy and see a car that drives itself. From bugs to birds, kitchen chemistry to computer games, environmental monitoring to electronic music – the Expo has something for everyone and is completely free of charge. The Expo is the pinnacle event of the inaugural USA Science & Engineering Festival to be held in the greater Washington D.C. area October 10-24, 2010. The USA Science & Engineering Festival is a collaboration of over 500 of the nation’s leading science and engineering organizations. For more information on all Festival events and how you can get involved, visit www.usasciencefestival.org