Consider this: By the time you had breakfast this morning, the world’s urban population grew by some 15,000 people. This number will increase to 180,000 people by the end of the day and to 1.3 million by the end of the week. On a planet with such a vast amount of space, this pace of urbanization is like crowding all of humanity into a country the size of France.
Cities are where most of the world’s population lives, where more and more of population growth will occur, and where most poverty will soon be located.
But why do so many people choose cities? Poor people constantly pour into Rio de Janeiro and Nairobi and Mumbai in search of something better. The poorest people who come to cities from other places aren’t irrational or mistaken. They flock to urban areas because cities offer advantages they couldn’t find elsewhere. The poverty rate among recent arrivals to big cities is higher than the poverty rate of long-term residents, which suggests that, over time, city dwellers’ fortunes can improve considerably.