The arrival of this family or graduate or baby will tip the world's demographic scale and, for the first time in history, more than half the human population will live in cities.
At present, 3.3 billion people live in urban centres across the globe. By 2030 this number is predicted to reach five billion, with 95 percent of this growth in developing countries. Over the next three decades, Asia's urban population will double from 1.36 billion to 2.64 billion, Africa's city dwellers will more than double from 294 million to 742 million, while Latin America and the Caribbean will see a slower rise from about 400 million to 600 million, according to the UN Population Fund (UNFPA).
