The molecular structure of cities  JUL 23 2014

MIT's Franz-Josef Ulm has taken to analyzing the structure of cities as if they were molecular materials like glass or crystal.

With colleagues, Ulm began analyzing cities the way you'd analyze a material, looking at factors such as the arrangement of buildings, each building's center of mass, and how they're ordered around each other. They concluded that cities could be grouped into categories: Boston's structure, for example, looks a lot like an "amorphous liquid." Seattle is another liquid, and so is Los Angeles. Chicago, which was designed on a grid, looks like glass, he says; New York resembles a highly ordered crystal.

I love this. It's like Jane Jacobs + the materials science research I did in college.

So far, Ulm says, the work has two potential applications. First, it could help predict and mitigate urban heat island effects, the fact that cities tend to be several degrees warmer than their surrounding areas-a phenomenon that has a major impact on energy use. (His research on how this relates to structure is currently undergoing peer review.) Second, he says that cities' molecular order (or disorder) may also affect their vulnerability to the kinds of catastrophic weather events that are becoming more frequent thanks to climate change.

(via 5 intriguing things)

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