In 1800 only 3% of the world's population lived in cities. Now in the 21st century more than half of humanity lives in u... (more)
In 1800 only 3% of the world's population lived in cities. Now in the 21st century more than half of humanity lives in urban areas. Program seven examines where cities are located, how are they organized, and what are they like and how by answering these questions we can begin to understand how to live on a planet of global cities. (less)