One my favorite books is "The Death and Life of Great American Cities" and I began to think about how it relates to the current Green movement. Here's a very open (theoretical) question, "Do Green cities make for safer cities?" or "Do high standards in environmental responsibility create safer/less crime?"
Some of my thoughts: Mass transit makes for more "eyes" on the street and prevents many crimes. Same concept with pedestrians. Mixed use buildings also create more life and give streets a near 24 hour life (unlike suburbia which sits relatively unused between 8-5). And people who are eco-responsible are more likely to be socially responsible.
In theory do you think this is a worthy idea? What about practically? Any real life examples would fantastic (for or against)!