According to a new study, at least 50 percent of the world’s population currently lives in cities, and humans are building the equivalent of a city the size of Vancouver every week. This urbanization threatens to obliterate endangered species and hasten the decline of natural resources like fresh water.
sprawl

Are Expanding Cities Killing the Planet?

Ray Bradbury fans recreate the legendary "Green Town" in real life
Sci-Fi legend blesses plan for community gardens, farmers’ market, green roofs, festival, renewable energy and a new green technology center named after the acclaimed writer. Bradbury grew up in Waukegan, IL, and immortalized it in stories as "Green Town," a lush and inviting place. Over time, population growth, sprawl and deterioration took its toll. Now, a green rebirth is being launched.
Losing the Forest to Save a Few Trees: The Problems Behind Green Sprawl
Sarah Shapiro discusses the news the some big box chains will only be building green from now on -- green sprawl is still sprawl.
Old Industrial Cities Give Rise to Urban Ecovillages
Article on urban ecovillages, specifically ones in Cleveland and Cincinnati.

Farmer: "Developers Don't Give a Crap."
Valuable land, once used to grow food, increasingly converted into suburbia. Where is our food going to come from in the future, China?

Fire Hazard Grows As Sprawl Exceeds Number Of Hydrants
Nearly a fourth of U.S. families now live in suburbs or exurbs without fire hydrants. This is just one of the downsides to continued expansion, and more evidence that we need smart growth.