Opening tomorrow (or, as they call it in China, today): Expo 2010 Shanghai China, which involves more than 190 countries and is expected to draw 70 million attendees during its run from May 1 to Oct. 31, making it the largest World Expo in history. Expo 2010’s theme — “Better City, Better Life” — “represents a central concern of the international community for future policy making, urban strategies and sustainable development. … Through different sub-themes, Expo 2010 will create blueprints for future cities and harmonious urban lifestyles providing an extraordinary educational and entertaining platform for visitors of all nations.”