Bangalore is known as the "Silicon Valley of India" (or "IT capital of India") because of its role as the nation's leading information technology (IT) exporter.[10][11][12] Indian technological organizations ISRO, Infosys andWipro are headquartered in the city. A demographically diverse city, Bangalore is the second fastest-growing major metropolis in India. It is home to many educational and research institutions in India. As a growing metropolitan city in a developing country, Bangalore confronts substantial pollution and other logistical and socio-economic problems.