An exhibit on scientific breakthroughs in the Muslim world has opened in Los Angeles, and a leading Egyptian activist stopped by for a preview.  Called 1001 Inventions, the exhibition chronicles the Golden Age of science in the Islamic world from the 7th through the 17th centuries.  Egyptian activist Wael Ghonim, who used Internet social networking sites to help spark a revolution, says technology has an important role in his part of the world today.