Half the world live in cities Fast growing. Every day the total number of people living in cities and towns goes up by 200,000. Housing. The world would need to build an extra house per second to keep up. Squatters. 1 in 6 people in the world are squatters.
World: land area Kenya UK
World: population Land area
World: slum growth Population
World: poverty* Slum growth * Living on less than the equivalent of $10 per day