Each year, the first Monday of October marks World Habitat Day, which aims to reflect on the state of towns and cities, and on the right of all to adequate shelter. The share of people living in urban ...

SIOUX CENTER, Iowa -- The numbers alarmed Mark Volkers. They put him to work. The numbers: One in six of us lives in a slum, according to the United Nations. That's 1 billion people. Forecasts say it ...