This video is from March 2011. It features Carlo Ratti from the MIT SENSEable City Lab discussing how they track real-time data from cities, particularly cellphone data. I like the video because it moves beyond visualizations to some useful analysis. It also covers some of their cool projects, such as trash_track. The lab is also doing some other great stuff, I encourage you to check it out. Here’s an article covering some of their older projects. One of their latest projects, United Cities of America, tracks how far commuters travel in US cities, again using cellphone data. The results are surprising and have real implications on how we run our cities.
Here’s a picture from the United Cities project, showing the distance commuters live away from cities (as represented by rings emanating from the city):
And here’s the TED talk: