http://krugman.blogs.nytimes.com/2013/07/21/a-tale-of-two-rust-belt-cities/ (http://krugman.blogs.nytimes.com/2013/07/21/a-tale-of-two-rust-belt-cities/)
http://krugman.blogs.nytimes.com/2013/07/22/did-sprawl-kill-horatio-alger/ (http://krugman.blogs.nytimes.com/2013/07/22/did-sprawl-kill-horatio-alger/)
I'm a already a believer in density, but this feels like something new. We now have data to show that sprawl leads to a permanent underclass and cities lead to social mobility and equality. No wonder Republicans hate cities.