Ours is an urban world. Cities and metro areas are the principal source of economic progress for the global economy. More than half the world’s population lives in cities and metro areas, a proportion that is projected to grow to roughly three-quarters. But until recently, we have lacked the kind of data and information required to understand the role, function, and disparities among the world’s cities. This talk provides a data-driven assessment of global cities in a world of seven billion, using data from satellite images from space of the world at night. Speakers: Richard Florida