My friend and colleague, Danny Sheehan was interviewed on WNYC's Brian Lehrer Show this week talking a map he designed that tracked the flow of residential mobility among Brian Lehrer listeners. Among 1,600 entries, his was selected as one of the 15 featured, and one of two people interviewed about his design on-air live. You can see a video his map here.

Since my research is about where people move, this is obviously more than of just passing interest to me and Danny's visualization of moves is an incredibly helpful tool to detect patterns of neighborhood change. I know this because Danny helped us with a project that ...