Hot topography, the geography of opportunity, and getting to work fast

Perhaps there is no more critical pair of factors than transportation and employment opportunities, the intersection of which reveals not only whether a person in a certain city can find decent job, but also how much time and money getting to that job will cost him. Environmental scientist David Levinson calls this “the geography of opportunity,” and his newly published study Access Across America: Transit 2014 maps this terrain with a mesmerizing selection of data.