Urban map lines shift

Africa has a larger urban population than North America, reveals a study released yesterday.

The International Institute for Environment and Development (IIED) found that 25 of the world's fastest-growing large cities were in Africa and half the world's urban population now lived in Asia which also had half the world's largest cities.

Researcher David Satterthwaite said: "Since 1900, Europe's share of the 100 largest cities has fallen from 50 to under 10."

Many of the largest cities now had more people moving out of them than into them.

Worldwide, a billion people lived in low-quality housing or squatter settlements with inadequate water and sanitation. - Sapa