The fastest growing mega-city in the world… Lagos, Nigeria by Mariana von Zeller for CurrentTV
A megacity is usually defined as a recognized metropolitan area with a total population in excess of 10 million people. In 2000, there were 18 megacities – conurbations* such as Tokyo, Mexico City, Bombay, Sao Paulo and New York City – that have populations in excess of 10 million inhabitants. Greater Tokyo already has 35 million, more than the entire population of Canada.
By 2025, according to the Far Eastern Economic Review, Asia alone will have at least 10 hypercities, those with 20 million or more, including Jakarta, Indonesia (24.9 million people), Dhaka, Bangladesh (25 million), Karachi, Pakistan (26.5 million), Shanghai (27 million) and Bombay (with a staggering 33 million). Lagos, Nigeria has grown from 300,000 in 1950 to an estimated 15 million today, and the Nigerian government estimates that city will have expanded to 25 million residents by 2015. Chinese experts forecast that Chinese cities will contain 800 million people by 2020.