Sure, not everyone, but an ever-increasing number: "In 1950, one-third of the world’s people lived in cities. Just 50 years later, this proportion has risen to

Sure, not everyone, but an ever-increasing number: "In 1950, one-third of the world’s people lived in cities. Just 50 years later, this proportion has risen to one-half and will continue to grow to two-thirds, or 6 billion people, by 2050. Cities are now home to half of humankind." http://www.un.org/en/globalissues/briefingpapers/cities/vitalstats.shtml http://www.un.org/en/globalissues/briefingpapers/cities/vita...