A new report predicts that more than half of America will live in a metro area with a million people or more by 2042.
When comparing areas on the fringe to growth in metros, the exurbs are gaining big.
A new measurement - based on satellite images - highlights cities' key role in economic development.
The West African metropolis has hit 21 million, surpassing Cairo.
Stark maps highlight inefficiencies in global food production.
It's cities versus suburbs in these maps of population growth.
This chart might break your brain.
The United Nations projects a huge global urban population boom by 2050, but in some places more than others.
Census figures show widespread increases in the square mileage of urbanized areas in the U.S.
Census definitions include a wide spectrum of places that count as cities.
The metro areas that saw the greatest slowdown in the previous decades were the ones that saw the biggest booms in the 1990s.
Despite much urbanization, the majority of the country's growing population is living in rural areas and with few resources.
What the urban world will look like in 2050.
Major downtown development projects are helping to make Surrey into its own urban center.
New census figures show population dominance moving away from the east.
A new report finds growing urban and minority populations that will affect redistricting and reapportionment in the Mountain West.
Pollution mounts as cities grow and sewage infrastructure lags
Government targets poorly constructed buildings amid a string of collapses
A sustainable development expert on how African cities should handle the continent's urbanization boom