urbanization
These state or local programs are becoming popular because they build connections between rural and urban residents in a divisive political climate.
How urban living can cap population growth and help conserve natural resources.
More than half of the people on the planet live in cities -- so it's more important than ever for countries to make a plan for sustainable growth.
It does not need to be like this.
WHAT'S HAPPENING
A group of researchers combed through 10,000 data entries to create the first mappable record of human population changes, dating back to 3,700 B.C.
Welcome to the megacities of the future.
“You can put off building a highway or an airport, but you can’t put off nurturing a child."