Major cities in the world including Mumbai and Kolkata are witnessing a rare phenomenon as the number of people who are moving out of these metros are on an increase, contrary to what has been predicted.

A UN report said these cities have far greater number of people moving out than into them and few of these cities will be of the size that doomsayers had predicted for them in the 1970s.

Even though by next year more than half of the world population will be living in urban areas, the urban growth is showing a decline in most regions, the United Nations Population Fund said. Read the rest of this entry »