fantom fanÂ·tom (fÄn'tÉm) n. Variant of phantom. phantom phanÂ·tom or fanÂ·tom (fÄn'tÉm) n. Something apparently seen, heard, or sensed, but having no physical reality. An image that appears only in the mind; an illusion. A model, especially a transparent one, of the human body or of any of its parts.
Beijing, also Peking, is the capital of the People's Republic of China and one of the most populous cities in the world. Its population in 2013 was 21,150,000. The city proper is the 3rd largest in the world.
But many migrants will make their home in a growing number of megacities -- urban giants such as the world has never seen. By 2025 the U.N. predicts that Delhi, Dhaka, Kolkata, Mumbai, Mexico City, New York, Sao Paulo and Shanghai will all have populations of more than 20 million. Tokyo is projected to become home to some 37 million -- three times the current population of Greece.