Context : OnCities
Interesting Momus essay on high density living (http://www.imomus.com/doubledensity.html))
What makes a city thrive? : https://web.archive.org/web/20061211195743/http://www.news.harvard.edu/gazette/2004/02.05/01-density.html
WorldChanging
- Density as efficiency : http://www.worldchanging.com/archives/003034.html
- How dense can we be? : http://www.worldchanging.com/archives/003037.html
High density and the Segway : http://www.cnn.com/2005/TECH/05/11/visionary.kamen/