Sociologist Saskia Sassen is part of this 17 min BBC report on the changes taking place in Lagos, Nigeria.

While the average Westerner may not pay much attention to the megacities of the developing world, these cities are quite relevant as they are growing at an unbelievable pace (for example, check out the growth of many cities in China), present a whole host of new issues (shantytowns, joblessness, providing education and healthcare, etc.), and are quite connected to Western cities through financial markets, migration patterns, and cultural exchange.