A new mathematical approach uses data on people's commutes between and within US counties to identify important geographic regions. A new mathematical approach uses data on people's commutes between ...

Years ago, I found a book that redrew the map of our country as if the states had been defined by geography and culture rather than politics. I haven't been able to re-find the volume, yet the notion ...

Regional identities and their statistics do not always neatly align. This is especially true in the mid-Atlantic and northeast United States, where regions frequently overlap jurisdictions. New York ...