10 Million Sardines in a Sea of Skyscrapers
Two hundred years ago, just 3 percent of the world's population lived in cities. Today, cities hold more than half of all people on Earth. The number of urban residents is growing by nearly 60 million every year, a trend driven by rapid industrialization, rural-urban migration, and globalization. If this pace continues, by 2050 over 70 percent of people will call cities home.