Who Goes Where
In just two decades, China will have a whopping 44 urban areas boasting populations larger than 4 million. India will have 11 such cities. Who will live there? In China, the answer is simple: migrants from rural areas. Growth in India’s cities, by contrast, will mainly be organic. The country’s population is also much younger than China's. A mere 16 percent of India’s population will be over 55 in 20 years, while 28 percent of China's will be.
*Correction: In the graphic below, the map of Spain should be the map of Brazil and state "more than the population of Brazil."