Urban Sprawl is typified by low density suburban development. In most areas around the globe, urban areas are growing at a rate faster than population growth. This causes numerous environmental problems (not to mention social and health related). These including agricultural destruction, water pollution and flooding, air pollution, soil degradation, decrease of biodiversity and wildlife, and much more. Below are some pictures urban growth around the world. Pictures are worth a thousand words.
Interesting Comparison of the Mexico/Guatemala political boundry: 1974-2000
Sydney, Australia: 1975-2002
Las Vegas, Nevada: 1973-2000
Beijing, China: 1978-2000
Mexico City, Mexico: 1973-2000
