The World Expo will be held in Shanghai in 2010. The theme is "Better City, Better Life".  We went to Shanghai to see the facelift the city is undergoing, spoke with expo authorities and Shanghai residents on just how Shanghai will be transformed into a better city for a better life. In the new century, expos' themes have become more highbrow, such as environmental protection. How does that differ from promoting technology? How is China hoping to flex its muscles via the expo? And how would hosting the event change Shanghai and the nation?