Some African countries are 'urbanizing before they industrialize' -- and it could be devastating for future populations

Finbarr O'Reilly/Reuters Over the next 35 years, the United Nations predicts that 2.5 billion people will move into cities. Some of those cities already have the necessary infrastructure, like bridges, hospitals, and office buildings, to support that influx. China, for instance, is moving 250 million people into its budding megacities over the next eight years. It's been quickly building highways and roads for the last couple decades. But not all countries are building infrastructure fast enough...